{"id":"CVE-2025-8836","aliases":["AZL-66165","AZL-66201","CLSA-2025-1760019942","CLSA-2025-1761074965","CLSA-2025-1765378381","EUVD-2025-24133","GHSA-hvcg-67f3-52cf","SUSE-SU-2025:03219-1","SUSE-SU-2025:03367-1","SUSE-SU-2025:3947-1","SUSE-SU-2026:20200-1","UBUNTU-CVE-2025-8836","openSUSE-SU-2025:15447-1","openSUSE-SU-2026:20138-1"],"status":"published","title":"JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00227,"percentile":0.13594,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2025-08-11T07:32:08Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Azure Linux:3","package":"jasper","fixed_in":["4.2.1-3"],"sources":["osv"]},{"ecosystem":"Azure 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Linux:3","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.1-3"}]}]},{"source":"osv","ecosystem":"Azure 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SP7","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-150600.4.5.1"}]}],"bundled":4},{"source":"osv","ecosystem":"openSUSE:Leap 15.6","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-150600.4.5.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 16.0","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-160000.1.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-160000.1.1"}]}],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.900.1-debian1-2.4","1.900.1-debian1-2.4ubuntu1","1.900.1-debian1-2.4ubuntu1.1","1.900.1-debian1-2.4ubuntu1.2","1.900.1-debian1-2.4ubuntu1.3"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-2.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"jasper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.8-160000.1.1"}]}],"bundled":3}],"products":[{"vendor":"jasper_project","product":"jasper"}],"references":[{"url":"https://vuldb.com/?id.319370","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.319370","tags":["signature","permissions-required","Permissions Required","VDB Entry","report"]},{"url":"https://vuldb.com/?submit.622409","tags":["third-party-advisory","Exploit","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://github.com/jasper-software/jasper/issues/401","tags":["issue-tracking","exploit","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://drive.google.com/file/d/1pPgndhHh2z0lk99Wt31W-XIW3XWt8FB3/view?usp=drive_link","tags":["exploit","Exploit","evidence","report"]},{"url":"https://github.com/jasper-software/jasper/commit/79185d32d7a444abae441935b20ae4676b3513d4","tags":["patch","Patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8836","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-hvcg-67f3-52cf"},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2025-1760019942.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos7els/CLSA-2025-1761074965.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2025-1765378381.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51257","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8837","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8836.json","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202503219-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1247901","tags":["report"]},{"url":"https://bugzilla.suse.com/1247902","tags":["report"]},{"url":"https://bugzilla.suse.com/1247904","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-8835","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-8836","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-8837","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202503367-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-20253947-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1218802","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2023-51257","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202620200-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-8836","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-8836","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-8836","title":"JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T07:32:08.43Z","modified":"2025-08-12T13:44:11.473Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","level":"low","assessor":"cna"},{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","level":"low","assessor":"cna"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:32:38.025852Z"}],"euvd":[{"id":"EUVD-2025-24133","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T07:32:08Z","modified":"2025-08-12T13:44:11Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium"}],"updated_at":"2026-11-02T20:31:59.474585Z"}],"ghsa":[{"id":"GHSA-hvcg-67f3-52cf","title":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function...","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T09:30:37Z","modified":"2025-08-11T09:30:44Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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":"low"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:03:14.349614Z"}],"nvd":[{"id":"CVE-2025-8836","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T08:15:26.7Z","modified":"2026-06-17T10:07:45.143Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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":"low","assessor":"secondary"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P","level":"low","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:11:22.953396Z"}],"osv":[{"id":"CVE-2025-8836","title":"JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T07:32:08.43Z","modified":"2026-10-28T11:06:40.517424115Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:44:53.185592Z"},{"id":"UBUNTU-CVE-2025-8836","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T08:15:00Z","modified":"2026-04-22T16:17:02.363019Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"},{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"updated_at":"2026-11-02T16:55:55.926217Z"},{"id":"AZL-66165","title":"CVE-2025-8836 affecting package jasper for versions less than 4.2.1-3","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T08:15:26Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:23.841127Z"},{"id":"AZL-66201","title":"CVE-2025-8836 affecting package jasper for versions less than 2.0.32-5","description":"A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-08-11T08:15:26Z","modified":"2026-04-21T04:37:48.148027Z","updated_at":"2026-11-02T15:28:08.354547Z"},{"id":"CLSA-2025-1760019942","title":"jasper: Fix of CVE-2025-8836","description":"- CVE-2025-8836: fix manipulation in function jpc_floorlog2 to prevent\n  reachable assertion","status":"published","published":"2025-10-09T14:25:51Z","modified":"2026-06-01T00:31:17.84871938Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1761074965","title":"jasper: Fix of CVE-2025-8836","description":"- CVE-2025-8836: fix manipulation in function jpc_floorlog2 to prevent\n  reachable assertion","status":"published","published":"2025-10-21T19:29:29Z","modified":"2026-06-01T00:33:18.237421028Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1765378381","title":"jasper: Fix of 3 CVEs","description":"- CVE-2025-8836: fix manipulation in function jpc_floorlog2 to prevent\n  reachable assertion","status":"published","published":"2026-10-20T18:44:22Z","modified":"2026-10-26T09:31:02.873751252Z","updated_at":"2026-11-02T15:43:42.847264Z"},{"id":"openSUSE-SU-2025:15447-1","title":"jasper-4.2.8-2.1 on GA media","description":"These are all security issues fixed in the jasper-4.2.8-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-08-15T00:00:00Z","modified":"2026-03-23T04:53:47.543253Z","updated_at":"2026-11-02T16:58:37.810934Z"},{"id":"openSUSE-SU-2026:20138-1","title":"Security update for jasper","description":"This update for jasper fixes the following issues:\n\nUpdate to 4.2.8:\n\n- CVE-2025-8837: Fixed a bug in the JPC decoder that could cause bad memory accesses if the debug level is set sufficiently high (bsc#1247901).\n- CVE-2025-8836: Added some missing range checking on several coding parameters in the JPC encoder (bsc#1247902).\n- CVE-2025-8835: Added a check for a missing color component in the jas_image_chclrspc function (bsc#1247904).\n","status":"published","published":"2026-01-30T09:59:14Z","modified":"2026-03-23T04:54:45.700164Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"SUSE-SU-2025:03219-1","title":"Security update for jasper","description":"This update for jasper fixes the following issues:\n\n- CVE-2025-8835: missing range check in the JPEG-2000 (JPC) Encoder leads to assertion failure and crash when\n  processing a malformed JPEG2000 image with an invalid `cblkwidth` parameter (bsc#1247904).\n- CVE-2025-8836: out-of-bounds array indexing in function `jas_image_chclrspc` leads to crash when processing a\n  malformed image file with BMP output format and color space conversion (bsc#1247902).\n- CVE-2025-8837: missing operations in cleanup code of the JPEG-2000 (JPC) Encoder leads to use-after-free when\n  processing malformed JPEG2000 images with certain debug levels enabled (bsc#1247901).\n","status":"published","published":"2025-09-15T09:19:16Z","modified":"2026-03-23T04:50:30.07122Z","updated_at":"2026-11-02T15:53:57.111474Z"},{"id":"SUSE-SU-2025:03367-1","title":"Security update for jasper","description":"This update for jasper fixes the following issues:\n\n- CVE-2025-8835: missing range check in the JPEG-2000 (JPC) Encoder leads to assertion failure and crash when\n  processing a malformed JPEG2000 image with an invalid `cblkwidth` parameter (bsc#1247904).\n- CVE-2025-8836: out-of-bounds array indexing in function `jas_image_chclrspc` leads to crash when processing a\n  malformed image file with BMP output format and color space conversion (bsc#1247902).\n- CVE-2025-8837: missing operations in cleanup code of the JPEG-2000 (JPC) Encoder leads to use-after-free when\n  processing malformed JPEG2000 images with certain debug levels enabled (bsc#1247901).\n","status":"published","published":"2025-09-26T09:14:33Z","modified":"2026-02-04T03:10:24.659141Z","updated_at":"2026-11-02T15:53:57.111474Z"},{"id":"SUSE-SU-2025:3947-1","title":"Security update for jasper","description":"This update for jasper fixes the following issues:\n\n- Update to 4.2.8:\n\n- CVE-2025-8837: Fixed a bug in the JPC decoder that could cause bad memory accesses if the debug level is set sufficiently high (bsc#1247901).\n- CVE-2025-8836: Added some missing range checking on several coding parameters in the JPC encoder (bsc#1247902).\n- CVE-2025-8835: Added a check for a missing color component in the jas_image_chclrspc function (bsc#1247904).\n- CVE-2023-51257: Fixed invalid memory write bug (bsc#1218802).\n","status":"published","published":"2025-11-05T08:17:44Z","modified":"2026-03-23T04:49:20.991252Z","updated_at":"2026-11-02T15:54:00.344164Z"},{"id":"SUSE-SU-2026:20200-1","title":"Security update for jasper","description":"This update for jasper fixes the following issues:\n\nUpdate to 4.2.8:\n\n- CVE-2025-8837: Fixed a bug in the JPC decoder that could cause bad memory accesses if the debug level is set sufficiently high (bsc#1247901).\n- CVE-2025-8836: Added some missing range checking on several coding parameters in the JPC encoder (bsc#1247902).\n- CVE-2025-8835: Added a check for a missing color component in the jas_image_chclrspc function (bsc#1247904).\n","status":"published","published":"2026-01-30T09:58:44Z","modified":"2026-03-23T04:52:42.993555Z","updated_at":"2026-11-02T15:54:01.610851Z"}]}}