{"id":"CVE-2026-32836","aliases":["DEBIAN-CVE-2026-32836","EUVD-2026-12631","GHSA-6mgc-4427-8p4x","UBUNTU-CVE-2026-32836","openSUSE-SU-2026:12176-1"],"status":"published","title":"mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00195,"percentile":0.09265,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-789"],"published":"2026-03-17T19:10:19Z","modified":"2026-10-28T10:54:58Z","affected":[{"source":"osv","ecosystem":"Debian:13","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240929.aaca599+dfsg-1","0.0~git20250608.8bba774+dfsg-1","0.0~git20250608.8bba774+dfsg-2","0.0~git20250608.8bba774+dfsg-3","0.3.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240929.aaca599+dfsg-1","0.0~git20250608.8bba774+dfsg-1","0.0~git20250608.8bba774+dfsg-2","0.0~git20250608.8bba774+dfsg-3","0.3.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20230918.9108f34+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240929.aaca599+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20250608.8bba774+dfsg-2","0.3.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libchdr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240929.aaca599+dfsg-1","0.0~git20250608.8bba774+dfsg-1","0.0~git20250608.8bba774+dfsg-2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"dr_libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20260901-1.1"}]}],"bundled":2}],"products":[{"vendor":"mackron","product":"dr_libs"},{"vendor":"mackron","product":"dr_libs dr_flac.h"}],"references":[{"url":"https://github.com/mackron/dr_libs/issues/298","tags":["issue-tracking","Exploit","Issue Tracking","Mitigation","Vendor Advisory","report"]},{"url":"https://github.com/mackron/dr_libs/commit/fefced4a64adfb1a68a2d31d882366e56096dee8","tags":["patch","fix","report"]},{"url":"https://github.com/mackron/dr_libs/commit/4f5a4cd3b57564d969443c580c75857e039f100a","tags":["patch","fix","report"]},{"url":"https://github.com/mackron/dr_libs/commit/663239a3d0460c33bd5b6e5166edcb404e3df676","tags":["patch","fix","report"]},{"url":"https://www.vulncheck.com/advisories/mackron-dr-libs-excessive-memory-allocation-in-picture-metadata-parsing","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32836","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6mgc-4427-8p4x"},{"url":"https://github.com/mackron/dr_libs/blob/master/dr_flac.h","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32836.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-32836","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-32836","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-32836","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-29022","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-32836","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-32836","title":"mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T19:10:19.404Z","modified":"2026-07-28T01:48:36.035Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:19:57.100857Z"}],"euvd":[{"id":"EUVD-2026-12631","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T19:10:19Z","modified":"2026-07-28T01:48:36Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:02:32.608142Z"}],"ghsa":[{"id":"GHSA-6mgc-4427-8p4x","title":"dr_libs version 0.13.3 and earlier contain an uncontrolled memory allocation vulnerability in...","description":"dr_libs version 0.13.3 and earlier contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T21:31:45Z","modified":"2026-04-27T18:32:01Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/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":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T15:07:39.383876Z"}],"nvd":[{"id":"CVE-2026-32836","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T20:16:14Z","modified":"2026-07-14T19:16:56.61Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:12:09.735529Z"}],"osv":[{"id":"CVE-2026-32836","title":"mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T19:10:19.404Z","modified":"2026-10-28T10:54:58.283651011Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"DEBIAN-CVE-2026-32836","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T20:16:14Z","modified":"2026-10-01T03:03:10.372633819Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/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":"medium"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"UBUNTU-CVE-2026-32836","description":"dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.","status":"published","published":"2026-03-17T20:16:00Z","modified":"2026-10-17T12:59:58.706665488Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:56:16.036833Z"},{"id":"openSUSE-SU-2026:12176-1","title":"dr_libs-devel-20260901-1.1 on GA media","description":"These are all security issues fixed in the dr_libs-devel-20260901-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-18T00:00:00Z","modified":"2026-10-19T09:30:05.151904656Z","updated_at":"2026-11-02T16:58:40.245664Z"}]}}