{"id":"CVE-2026-59204","aliases":["BIT-pillow-2026-59204","CLSA-2026-1786468070","CLSA-2026-1790674233","CLSA-2026-1790685259","CLSA-2026-1790747347","CLSA-2026-1790751826","CLSA-2026-1790754735","DEBIAN-CVE-2026-59204","EUVD-2026-43730","GHSA-vjc4-5qp5-m44j","MGASA-2026-0463","OESA-2026-3137","OESA-2026-3138","OESA-2026-3139","OESA-2026-3140","OESA-2026-3141","PYSEC-2026-3496","ROOT-APP-PYPI-CVE-2026-59204","SUSE-SU-2026:23217-1","SUSE-SU-2026:23228-1","SUSE-SU-2026:3084-1","SUSE-SU-2026:3268-1","UBUNTU-CVE-2026-59204","USN-8999-1","openSUSE-SU-2026:11283-1","openSUSE-SU-2026:21544-1"],"status":"published","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00385,"percentile":0.33049,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770","CWE-789"],"published":"2026-07-14T15:38:29Z","modified":"2026-11-06T11:15:03Z","fixes":[{"ecosystem":"PyPI","package":"pillow","fixed_in":["12.3.0"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"pillow","fixed_in":["12.3.0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pillow","fixed_in":["12.3.0-1"],"sources":["osv"]},{"ecosystem":"Root:PyPI","package":"pillow","fixed_in":["12.2.0+aikido.1","12.2.0+aikido.2","11.2.1+aikido.3","12.2.0+aikido.3","10.4.0+aikido.9","11.2.1+aikido.4","9.5.0+aikido.8","9.5.0+aikido.9","12.1.0+aikido.11","12.2.0+aikido.4","9.5.0+aikido.10","11.1.0+aikido.10","10.4.0+aikido.10","10.3.0+aikido.12","11.2.1+aikido.5","9.3.0+aikido.12","9.5.0+aikido.11","12.2.0+aikido.5","9.3.0+aikido.13","10.4.0+aikido.11","12.1.0+aikido.12","11.2.1+aikido.6","11.1.0+aikido.11","10.3.0+aikido.13","11.0.0+aikido.10","11.2.1+aikido.7","9.3.0+aikido.14","11.1.0+aikido.12","9.5.0+aikido.12","12.2.0+aikido.6","10.4.0+aikido.12","9.3.0+aikido.15","11.1.0+aikido.13","12.1.0+aikido.13","10.3.0+aikido.14","11.0.0+aikido.11","9.3.0+aikido.16","10.3.0+aikido.15","10.4.0+aikido.13","9.3.0+aikido.17","9.5.0+aikido.13","11.2.1+aikido.8","11.0.0+aikido.12","11.1.0+aikido.14","12.1.0+aikido.14","12.2.0+aikido.7","10.3.0+aikido.16","10.4.0+aikido.14","11.1.0+aikido.15","11.2.1+aikido.9","10.2.0+aikido.1","12.2.0+aikido.8","9.0.1+aikido.1","10.4.0+aikido.15","12.1.0+aikido.15","9.0.1+aikido.2","10.3.0+aikido.17","11.0.0+aikido.13","9.5.0+aikido.14","10.4.0+aikido.16","10.0.0+aikido.1","10.3.0+aikido.18","10.2.0+aikido.2","10.3.0+aikido.19","10.4.0+aikido.17","10.3.0+aikido.20","8.2.0+aikido.1","9.4.0+aikido.1","9.0.0+aikido.1","9.0.0+aikido.2","11.0.0+aikido.14","12.2.0+aikido.9","9.5.0+aikido.15","9.5.0+aikido.16","9.5.0+aikido.17","9.5.0+aikido.18","9.5.0+aikido.19","10.4.0+aikido.18"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"pillow","fixed_in":["9.0.1-1ubuntu0.6"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"pillow","fixed_in":["10.2.0-1ubuntu1.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"pillow","fixed_in":["12.1.1-2ubuntu1.4"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.2.0"},{"fixed":"12.3.0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"pillow","ranges":[{"type":"SEMVER","events":[{"introduced":"8.2.0"},{"fixed":"12.3.0"}]}]},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.2.1"},{"fixed":"11.2.1.post3+tuxcare"}]}],"versions":["11.2.1","11.2.1.post1+tuxcare","11.2.1.post2+tuxcare"],"bundled":5},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.3.0"},{"fixed":"11.3.0.post5+tuxcare"}]}],"versions":["11.3.0","11.3.0.post1+tuxcare","11.3.0.post2+tuxcare","11.3.0.post3+tuxcare","11.3.0.post4+tuxcare"],"bundled":14},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.4.0"},{"fixed":"10.4.0.post10+tuxcare"}]}],"versions":["10.4.0","10.4.0.post1+tuxcare","10.4.0.post2+tuxcare","10.4.0.post3+tuxcare","10.4.0.post4+tuxcare","10.4.0.post5+tuxcare","10.4.0.post6+tuxcare","10.4.0.post7+tuxcare","10.4.0.post8+tuxcare","10.4.0.post9+tuxcare"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.5.0"},{"fixed":"9.5.0.post8+tuxcare"}]}],"versions":["9.5.0","9.5.0.post1+tuxcare","9.5.0.post2+tuxcare","9.5.0.post3+tuxcare","9.5.0.post4+tuxcare","9.5.0.post5+tuxcare","9.5.0.post6+tuxcare","9.5.0.post7+tuxcare"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.4.0"},{"fixed":"9.4.0.post9+tuxcare"}]}],"versions":["9.4.0","9.4.0.post1+tuxcare","9.4.0.post2+tuxcare","9.4.0.post3+tuxcare","9.4.0.post4+tuxcare","9.4.0.post5+tuxcare","9.4.0.post6+tuxcare","9.4.0.post7+tuxcare","9.4.0.post8+tuxcare"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.4.0"},{"fixed":"8.4.0.post8+tuxcare"}]}],"versions":["8.4.0","8.4.0.post1+tuxcare","8.4.0.post2+tuxcare","8.4.0.post3+tuxcare","8.4.0.post4+tuxcare","8.4.0.post5+tuxcare","8.4.0.post6+tuxcare","8.4.0.post7+tuxcare"],"bundled":8},{"source":"osv","ecosystem":"Debian:12","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.0.0-1","10.1.0-1","10.2.0-1","10.3.0-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16.0","package":"python-Pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.3.0-160000.8.1"}]}],"bundled":7}],"products":[{"vendor":"python","product":"pillow"},{"vendor":"python-pillow","product":"pillow"}],"references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory","web","report"]},{"url":"https://github.com/python-pillow/Pillow/pull/9704","tags":["x_refsource_MISC","Exploit","Issue Tracking","Patch","fix","web","report"]},{"url":"https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11ca","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0","tags":["x_refsource_MISC","Release Notes","article","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59204","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-vjc4-5qp5-m44j","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59204.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-59204","tags":["advisory"]},{"url":"https://github.com/python-pillow/Pillow","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2026-0463.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35909","tags":["report"]},{"url":"https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","tags":["web"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3137","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54059","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54060","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55379","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55380","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59197","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59200","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3138","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3139","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3140","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3141","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59198","tags":["advisory"]},{"url":"https://pypi.org/project/pillow","tags":["package"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623217-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1271418","tags":["report"]},{"url":"https://bugzilla.suse.com/1271419","tags":["report"]},{"url":"https://bugzilla.suse.com/1271420","tags":["report"]},{"url":"https://bugzilla.suse.com/1271421","tags":["report"]},{"url":"https://bugzilla.suse.com/1271422","tags":["report"]},{"url":"https://bugzilla.suse.com/1271424","tags":["report"]},{"url":"https://bugzilla.suse.com/1271425","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54058","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59197","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59198","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59199","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59200","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59204","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59205","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623228-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263084-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263268-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1270409","tags":["report"]},{"url":"https://bugzilla.suse.com/1270410","tags":["report"]},{"url":"https://bugzilla.suse.com/1270411","tags":["report"]},{"url":"https://bugzilla.suse.com/1270412","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54059","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54060","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55379","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55380","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-59204","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59204","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8999-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-54058","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54059","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54060","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55379","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55380","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59197","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59199","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59200","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59203","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59205","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-59204","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:38:29.545Z","modified":"2026-07-21T18:41:18.66Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-43730","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:38:29Z","modified":"2026-07-21T18:41:18Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:19:46.900828Z"}],"ghsa":[{"id":"GHSA-vjc4-5qp5-m44j","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"### Summary\n`src/libImaging/Jpeg2KDecode.c:853` accumulates `total_component_width` across every tile in a JPEG2000 image instead of recomputing it per tile. That accumulated value is then used in the `tile_bytes` calculation at `src/libImaging/Jpeg2KDecode.c:868`, which can make the decoder grow `state-\u003ebuffer` via `realloc` at `src/libImaging/Jpeg2KDecode.c:876` up to roughly one full image's decompressed size even when each tile is small. A crafted tiled JPEG2000 file can therefore force substantially higher transient memory usage and trigger out-of-memory failures during decoding. Based on current evidence, the supported impact is denial of service, not memory corruption.\n\n### Details\n- Location: `src/libImaging/Jpeg2KDecode.c:853`\n- Root cause: `total_component_width` is initialized only once before the tile loop and keeps growing across tiles. It is then used to derive `tile_bytes`, so later tiles are treated as if they had the combined component width of all earlier tiles.\n- Dangerous operation: `tile_bytes` is promoted into `tile_info.data_size`, then `state-\u003ebuffer` is grown with `realloc` at `src/libImaging/Jpeg2KDecode.c:876`.\n- Reachability: any attacker-controlled JPEG2000 image with many tiles reaches this path during normal `Image.open(...).load()` decoding.\n\n\n### PoC\nThe attached helper script and testcase were used:\n[exercise_j2k_tile_realloc.zip](https://github.com/user-attachments/files/28099912/exercise_j2k_tile_realloc.zip)\n\n\nGenerate the testcase:\n\n```bash\npythonexercise_j2k_tile_realloc.py make poc_3664_rgba_tile1832.jp2 \\\n  --size 3664 --tile 1832\n```\n\nExpected geometry from the helper:\n\n- image size: `3664 x 3664`\n- mode: `RGBA`\n- tile size: `1832 x 1832` (`2x2` tiles)\n- `image_bytes=53699584`\n- uncapped RSS observed:\n  - vulnerable build: `maxrss_kb=180264`\n  - fixed comparison build: `maxrss_kb=138404`\n\nLoad it with the current vulnerable build:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2\n```\n\nLoad it again under a 160 MB address-space cap:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2 --limit-mb 160\n```\n\n### Impact\nConservative impact: denial of service through memory exhaustion during JPEG2000 decoding.","status":"published","published":"2026-07-20T23:18:32Z","modified":"2026-07-20T23:18:33Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-770","CWE-789"],"updated_at":"2026-11-02T14:40:49.410128Z"}],"nvd":[{"id":"CVE-2026-59204","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:02.227Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-789","CWE-770"],"updated_at":"2026-11-02T14:12:29.114188Z"}],"osv":[{"id":"CVE-2026-59204","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:38:29.545Z","modified":"2026-10-28T11:18:06.482691363Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"DEBIAN-CVE-2026-59204","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:02.227Z","modified":"2026-10-25T10:01:10.08484276Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:57.932517Z"},{"id":"GHSA-vjc4-5qp5-m44j","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"### Summary\n`src/libImaging/Jpeg2KDecode.c:853` accumulates `total_component_width` across every tile in a JPEG2000 image instead of recomputing it per tile. That accumulated value is then used in the `tile_bytes` calculation at `src/libImaging/Jpeg2KDecode.c:868`, which can make the decoder grow `state-\u003ebuffer` via `realloc` at `src/libImaging/Jpeg2KDecode.c:876` up to roughly one full image's decompressed size even when each tile is small. A crafted tiled JPEG2000 file can therefore force substantially higher transient memory usage and trigger out-of-memory failures during decoding. Based on current evidence, the supported impact is denial of service, not memory corruption.\n\n### Details\n- Location: `src/libImaging/Jpeg2KDecode.c:853`\n- Root cause: `total_component_width` is initialized only once before the tile loop and keeps growing across tiles. It is then used to derive `tile_bytes`, so later tiles are treated as if they had the combined component width of all earlier tiles.\n- Dangerous operation: `tile_bytes` is promoted into `tile_info.data_size`, then `state-\u003ebuffer` is grown with `realloc` at `src/libImaging/Jpeg2KDecode.c:876`.\n- Reachability: any attacker-controlled JPEG2000 image with many tiles reaches this path during normal `Image.open(...).load()` decoding.\n\n\n### PoC\nThe attached helper script and testcase were used:\n[exercise_j2k_tile_realloc.zip](https://github.com/user-attachments/files/28099912/exercise_j2k_tile_realloc.zip)\n\n\nGenerate the testcase:\n\n```bash\npythonexercise_j2k_tile_realloc.py make poc_3664_rgba_tile1832.jp2 \\\n  --size 3664 --tile 1832\n```\n\nExpected geometry from the helper:\n\n- image size: `3664 x 3664`\n- mode: `RGBA`\n- tile size: `1832 x 1832` (`2x2` tiles)\n- `image_bytes=53699584`\n- uncapped RSS observed:\n  - vulnerable build: `maxrss_kb=180264`\n  - fixed comparison build: `maxrss_kb=138404`\n\nLoad it with the current vulnerable build:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2\n```\n\nLoad it again under a 160 MB address-space cap:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2 --limit-mb 160\n```\n\n### Impact\nConservative impact: denial of service through memory exhaustion during JPEG2000 decoding.","status":"published","published":"2026-07-20T23:18:32Z","modified":"2026-09-10T03:50:53.107920034Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-770","CWE-789"],"updated_at":"2026-11-02T15:46:57.348035Z"},{"id":"OESA-2026-3137","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-54059)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new(\u0026quot;1\u0026quot;, (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.(CVE-2026-54060)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow\u0026apos;s documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-55379)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.(CVE-2026-55380)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.(CVE-2026-59197)\n\nPillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.(CVE-2026-59200)\n\nPillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.(CVE-2026-59204)","status":"published","published":"2026-07-24T11:12:01Z","modified":"2026-08-18T01:21:25.079725782Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3138","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-54059)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new(\u0026quot;1\u0026quot;, (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.(CVE-2026-54060)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow\u0026apos;s documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-55379)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.(CVE-2026-55380)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.(CVE-2026-59197)\n\nPillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.(CVE-2026-59200)\n\nPillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.(CVE-2026-59204)","status":"published","published":"2026-07-24T11:12:01Z","modified":"2026-08-18T01:21:24.130369873Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3139","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-54059)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new(\u0026quot;1\u0026quot;, (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.(CVE-2026-54060)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow\u0026apos;s documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-55379)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.(CVE-2026-55380)\n\nPillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.(CVE-2026-59200)\n\nPillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.(CVE-2026-59204)","status":"published","published":"2026-07-24T11:12:01Z","modified":"2026-08-18T01:21:23.957988879Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3140","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-54059)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new(\u0026quot;1\u0026quot;, (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.(CVE-2026-54060)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow\u0026apos;s documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-55379)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.(CVE-2026-55380)\n\nPillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.(CVE-2026-59200)\n\nPillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.(CVE-2026-59204)","status":"published","published":"2026-07-24T11:12:01Z","modified":"2026-08-18T01:21:25.106890866Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3141","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-54059)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new(\u0026quot;1\u0026quot;, (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.(CVE-2026-54060)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow\u0026apos;s documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.(CVE-2026-55379)\n\nPillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.(CVE-2026-55380)\n\nPillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow\u0026apos;s TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.(CVE-2026-59198)\n\nPillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.(CVE-2026-59204)","status":"published","published":"2026-07-24T11:12:01Z","modified":"2026-08-18T01:21:25.227036325Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"PYSEC-2026-3496","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"### Summary\n`src/libImaging/Jpeg2KDecode.c:853` accumulates `total_component_width` across every tile in a JPEG2000 image instead of recomputing it per tile. That accumulated value is then used in the `tile_bytes` calculation at `src/libImaging/Jpeg2KDecode.c:868`, which can make the decoder grow `state-\u003ebuffer` via `realloc` at `src/libImaging/Jpeg2KDecode.c:876` up to roughly one full image's decompressed size even when each tile is small. A crafted tiled JPEG2000 file can therefore force substantially higher transient memory usage and trigger out-of-memory failures during decoding. Based on current evidence, the supported impact is denial of service, not memory corruption.\n\n### Details\n- Location: `src/libImaging/Jpeg2KDecode.c:853`\n- Root cause: `total_component_width` is initialized only once before the tile loop and keeps growing across tiles. It is then used to derive `tile_bytes`, so later tiles are treated as if they had the combined component width of all earlier tiles.\n- Dangerous operation: `tile_bytes` is promoted into `tile_info.data_size`, then `state-\u003ebuffer` is grown with `realloc` at `src/libImaging/Jpeg2KDecode.c:876`.\n- Reachability: any attacker-controlled JPEG2000 image with many tiles reaches this path during normal `Image.open(...).load()` decoding.\n\n\n### PoC\nThe attached helper script and testcase were used:\n[exercise_j2k_tile_realloc.zip](https://github.com/user-attachments/files/28099912/exercise_j2k_tile_realloc.zip)\n\n\nGenerate the testcase:\n\n```bash\npythonexercise_j2k_tile_realloc.py make poc_3664_rgba_tile1832.jp2 \\\n  --size 3664 --tile 1832\n```\n\nExpected geometry from the helper:\n\n- image size: `3664 x 3664`\n- mode: `RGBA`\n- tile size: `1832 x 1832` (`2x2` tiles)\n- `image_bytes=53699584`\n- uncapped RSS observed:\n  - vulnerable build: `maxrss_kb=180264`\n  - fixed comparison build: `maxrss_kb=138404`\n\nLoad it with the current vulnerable build:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2\n```\n\nLoad it again under a 160 MB address-space cap:\n\n```bash\npython exercise_j2k_tile_realloc.py load poc_3664_rgba_tile1832.jp2 --limit-mb 160\n```\n\n### Impact\nConservative impact: denial of service through memory exhaustion during JPEG2000 decoding.","status":"published","published":"2026-07-23T11:41:48.190567Z","modified":"2026-07-23T15:11:20.720915099Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T15:52:56.847083Z"},{"id":"UBUNTU-CVE-2026-59204","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:00Z","modified":"2026-11-05T11:46:38.784233702Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T13:30:15.321876Z"},{"id":"BIT-pillow-2026-59204","title":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","description":"Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-15T08:55:00.989Z","modified":"2026-09-08T08:48:18.536773495Z","updated_at":"2026-11-02T15:28:34.724063Z"},{"id":"CLSA-2026-1786468070","title":"TuxCare security update for pillow (5 CVEs)","description":"TuxCare rebuilt pillow to address 5 CVEs. Fixed in 11.2.1.post3+tuxcare.","status":"published","published":"2026-08-11T17:07:50Z","modified":"2026-10-15T09:48:05.272604182Z","updated_at":"2026-11-02T15:43:46.850893Z"},{"id":"CLSA-2026-1790674233","title":"TuxCare security update for pillow (14 CVEs)","description":"TuxCare rebuilt pillow to address 14 CVEs. Fixed in 11.3.0.post5+tuxcare.","status":"published","published":"2026-09-29T09:30:33Z","modified":"2026-10-15T09:48:02.144374386Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790685259","title":"TuxCare security update for pillow (4 CVEs)","description":"TuxCare rebuilt pillow to address 4 CVEs. Fixed in 10.4.0.post10+tuxcare.","status":"published","published":"2026-09-29T12:34:19Z","modified":"2026-10-15T09:48:02.378583101Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790747347","title":"TuxCare security update for pillow (4 CVEs)","description":"TuxCare rebuilt pillow to address 4 CVEs. Fixed in 9.5.0.post8+tuxcare.","status":"published","published":"2026-09-30T05:49:07Z","modified":"2026-10-15T09:48:02.384794473Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790751826","title":"TuxCare security update for pillow (4 CVEs)","description":"TuxCare rebuilt pillow to address 4 CVEs. Fixed in 9.4.0.post9+tuxcare.","status":"published","published":"2026-09-30T07:03:46Z","modified":"2026-10-15T09:48:02.262965083Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790754735","title":"TuxCare security update for pillow (8 CVEs)","description":"TuxCare rebuilt pillow to address 8 CVEs. Fixed in 8.4.0.post8+tuxcare.","status":"published","published":"2026-09-30T07:52:15Z","modified":"2026-10-15T09:48:02.212872871Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"MGASA-2026-0463","title":"Updated python-pillow packages fix security vulnerabilities","description":"Prevent decompression bomb when parsing PDF\nWindowsViewer.get_command injection\nEPS image infinite loop\nJPEG2000 image memory usage\nMcIdas out-of-bounds (OOB) read\nOut-of-bounds (OOB) read when saving 1 mode TGA images\nOut-of-bounds (OOB) write from large RankFilter sizes\nOut-of-bounds (OOB) write from Image.paste()\nOut-of-bounds (OOB) write in ImageCmsTransform\nPrevent FontFile decompression bomb\nPrevent GD decompression bomb\n","status":"published","published":"2026-10-01T00:08:51Z","modified":"2026-10-01T00:27:45.940050235Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:11283-1","title":"python313-Pillow-12.3.0-2.1 on GA media","description":"These are all security issues fixed in the python313-Pillow-12.3.0-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-07-15T00:00:00Z","modified":"2026-07-16T10:00:16.326117475Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"openSUSE-SU-2026:21544-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:36:28Z","modified":"2026-08-12T18:23:41.374022335Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"ROOT-APP-PYPI-CVE-2026-59204","title":"CVE-2026-59204 in pillow - Patched by Root","description":"Root has patched CVE-2026-59204 in the pillow package for Root:PyPI. Multiple fixed versions available.","status":"published","published":"2026-11-06T10:13:42Z","modified":"2026-11-06T11:15:03.129541585Z","updated_at":"2026-11-06T11:42:45.055937Z"},{"id":"SUSE-SU-2026:23217-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:35:48Z","modified":"2026-08-27T18:23:09.233548245Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23228-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:35:48Z","modified":"2026-08-27T18:23:10.173621403Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:3084-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n","status":"published","published":"2026-07-16T17:46:49Z","modified":"2026-07-17T09:30:07.365875733Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3268-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues:\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-54059: bomb protection bypass via PCF font loading due to `Image.frombytes()` being called without\n  `_decompression_bomb_check()` (bsc#1270409).\n- CVE-2026-54060: excessive allocation due to `FontFile.compile()`: `Image.new()` being called without\n  `_decompression_bomb_check()` (bsc#1270410).\n- CVE-2026-55379: bomb protection bypass via font loading due to `Image.new()` being called without\n  `_decompression_bomb_check()` (bsc#1270411).\n- CVE-2026-55380: unchecked 4.3 GB C-heap allocation due to image dimensions being accepted without\n  `_decompression_bomb_check()` in `GdImageFile._open()` (bsc#1270412).  \n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-07-27T10:59:25Z","modified":"2026-07-28T10:00:08.428650372Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"USN-8999-1","title":"pillow vulnerabilities","description":"It was discovered that Pillow incorrectly handled map stride values\nwhen loading certain McIdas AREA images. An attacker could possibly\nuse this issue to obtain sensitive information or cause a denial of\nservice. (CVE-2026-54058)\n\nIt was discovered that Pillow did not properly check for decompression\nbombs when processing font files. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-54059, CVE-2026-54060, CVE-2026-55379)\n\nIt was discovered that Pillow did not properly check for decompression\nbombs when loading GD image files. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-55380)\n\nIt was discovered that Pillow incorrectly validated filter sizes in\nthe rank filter implementation. An attacker could possibly use this\nissue to cause Pillow to crash or execute arbitrary code.\n(CVE-2026-59197)\n\nIt was discovered that Pillow incorrectly handled image coordinate\ncalculations. An attacker could possibly use this issue to cause\nPillow to crash. (CVE-2026-59199)\n\nIt was discovered that Pillow did not properly limit the size of\ndecompressed PDF stream data. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-59200)\n\nIt was discovered that Pillow incorrectly parsed EPS files containing\na negative byte count in the BeginBinary directive. An attacker could\npossibly use this issue to cause Pillow to hang, resulting in a denial\nof service. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-59203)\n\nIt was discovered that Pillow incorrectly accumulated JPEG2000 tile\ncomponent widths. An attacker could possibly use this issue to cause\nPillow to consume excessive memory, resulting in a denial of service.\n(CVE-2026-59204)\n\nIt was discovered that Pillow incorrectly validated image mode\ncompatibility in color management transforms. An attacker could\npossibly use this issue to cause Pillow to crash or execute arbitrary\ncode. (CVE-2026-59205)","status":"published","published":"2026-11-04T15:49:54Z","modified":"2026-11-05T11:58:21.097270279Z","updated_at":"2026-11-05T13:30:00.949926Z"}]}}