{"id":"CVE-2026-88373","aliases":["DEBIAN-CVE-2026-88373","EUVD-2026-86314","GHSA-24mr-r2pj-2fq7","MGASA-2026-0552","ROOT-OS-DEBIAN-12-CVE-2026-88373","ROOT-OS-DEBIAN-13-CVE-2026-88373","UBUNTU-CVE-2026-88373","USN-8909-1"],"status":"published","title":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path...","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","severity":{"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":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00416,"percentile":0.36368,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2026-09-24T00:00:00Z","modified":"2026-10-28T11:19:11Z","fixes":[{"ecosystem":"Debian:14","package":"libde265","fixed_in":["1.1.2-1"],"sources":["osv"]},{"ecosystem":"Mageia:10","package":"libde265","fixed_in":["1.0.16-4.2.mga10","1.0.16-4.2.mga10.tainted"],"sources":["osv"]},{"ecosystem":"Root:Debian:12","package":"libde265","fixed_in":["1.0.11-1+deb12u3.aikido.14"],"sources":["osv"]},{"ecosystem":"Root:Debian:12","package":"rootio-libde265","fixed_in":["1.0.11-1+deb12u3.aikido.14"],"sources":["osv"]},{"ecosystem":"Root:Debian:13","package":"libde265","fixed_in":["1.0.15-1+deb13u2.aikido.9"],"sources":["osv"]},{"ecosystem":"Root:Debian:13","package":"rootio-libde265","fixed_in":["1.0.15-1+deb13u2.aikido.9"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"libde265","fixed_in":["1.0.2-2ubuntu0.16.04.1~esm7"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libde265","fixed_in":["1.0.2-2ubuntu0.18.04.1~esm7"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libde265","fixed_in":["1.0.4-1ubuntu0.4+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libde265","fixed_in":["1.0.8-1ubuntu0.3+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"libde265","fixed_in":["1.0.15-1ubuntu0.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:26.04:LTS","package":"libde265","fixed_in":["1.0.16-1ubuntu0.1~esm2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.11-1","1.0.11-1+deb12u1","1.0.11-1+deb12u2","1.0.11-1+deb12u3","1.0.12-1","1.0.12-2","1.0.13-1","1.0.15-1","1.0.16-1","1.0.18-1","1.1.1-1","1.1.2-1","1.1.3-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.15-1","1.0.15-1+deb13u1","1.0.15-1+deb13u2","1.0.16-1","1.0.18-1","1.1.1-1","1.1.2-1","1.1.3-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.2-1"}]}],"versions":["1.0.15-1","1.0.16-1","1.0.18-1","1.1.1-1"]},{"source":"osv","ecosystem":"Mageia:10","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.16-4.2.mga10"}]}]},{"source":"osv","ecosystem":"Mageia:10","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.16-4.2.mga10.tainted"}]}]},{"source":"osv","ecosystem":"Root:Debian:12","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.11-1+deb12u3.aikido.14"}]}]},{"source":"osv","ecosystem":"Root:Debian:12","package":"rootio-libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.11-1+deb12u3.aikido.14"}]}]},{"source":"osv","ecosystem":"Root:Debian:13","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.15-1+deb13u2.aikido.9"}]}]},{"source":"osv","ecosystem":"Root:Debian:13","package":"rootio-libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.15-1+deb13u2.aikido.9"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.16.04.1~esm7"}]}],"versions":["1.0.2-1build1","1.0.2-2","1.0.2-2ubuntu0.16.04.1~esm1","1.0.2-2ubuntu0.16.04.1~esm2","1.0.2-2ubuntu0.16.04.1~esm3","1.0.2-2ubuntu0.16.04.1~esm4","1.0.2-2ubuntu0.16.04.1~esm5","1.0.2-2ubuntu0.16.04.1~esm6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.18.04.1~esm7"}]}],"versions":["1.0.2-2build1","1.0.2-2ubuntu0.18.04.1~esm1","1.0.2-2ubuntu0.18.04.1~esm2","1.0.2-2ubuntu0.18.04.1~esm3","1.0.2-2ubuntu0.18.04.1~esm4","1.0.2-2ubuntu0.18.04.1~esm5","1.0.2-2ubuntu0.18.04.1~esm6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.4-1ubuntu0.4+esm3"}]}],"versions":["1.0.3-1build1","1.0.4-1","1.0.4-1build1","1.0.4-1ubuntu0.1","1.0.4-1ubuntu0.2","1.0.4-1ubuntu0.3","1.0.4-1ubuntu0.4","1.0.4-1ubuntu0.4+esm1","1.0.4-1ubuntu0.4+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libde265","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-1ubuntu0.3+esm3"}]}],"versions":["1.0.8-1","1.0.8-1ubuntu0.1","1.0.8-1ubuntu0.2","1.0.8-1ubuntu0.3","1.0.8-1ubuntu0.3+esm1","1.0.8-1ubuntu0.3+esm2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:L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commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T00:00:00Z","modified":"2026-09-25T17:25:19.677Z","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","assessor":"adp"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T13:42:04.39372Z"}],"euvd":[{"id":"EUVD-2026-86314","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T00:00:00Z","modified":"2026-09-25T17:25:19Z","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":"2026-11-02T17:27:55.070935Z"}],"ghsa":[{"id":"GHSA-24mr-r2pj-2fq7","title":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path...","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T18:31:26Z","modified":"2026-09-25T18:31:21Z","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"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:12:27.190195Z"}],"nvd":[{"id":"CVE-2026-88373","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T17:17:07.197Z","modified":"2026-09-25T18:17:31.937Z","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","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:12:51.036099Z"}],"osv":[{"id":"CVE-2026-88373","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T00:00:00Z","modified":"2026-10-28T11:19:11.411906108Z","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":"2026-11-02T15:45:19.210277Z"},{"id":"DEBIAN-CVE-2026-88373","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T17:17:07.197Z","modified":"2026-09-26T09:00:17.908207328Z","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":"2026-11-02T15:46:05.506112Z"},{"id":"UBUNTU-CVE-2026-88373","description":"libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.","status":"published","published":"2026-09-24T17:17:00Z","modified":"2026-10-10T01:00:03.151476194Z","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":"2026-11-02T16:57:24.828975Z"},{"id":"MGASA-2026-0552","title":"Updated libde265 packages fixes a security vulnerability","description":"Zero-length NAL passed to de265_push_NAL makes memcpy run with a NULL\ndestination. (CVE-2026-88373)\n","status":"published","published":"2026-10-27T04:31:25Z","modified":"2026-10-27T04:45:03.087223606Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2026-88373","title":"CVE-2026-88373 in libde265 - Patched by Root","description":"Root has patched CVE-2026-88373 in the libde265 package for Root:Debian:12. Multiple fixed versions available.","status":"published","published":"2026-10-01T06:41:17Z","modified":"2026-10-01T07:15:02.650044691Z","updated_at":"2026-11-02T15:53:32.570806Z"},{"id":"ROOT-OS-DEBIAN-13-CVE-2026-88373","title":"CVE-2026-88373 in libde265 - Patched by Root","description":"Root has patched CVE-2026-88373 in the libde265 package for Root:Debian:13. Multiple fixed versions available.","status":"published","published":"2026-10-01T06:55:43Z","modified":"2026-10-01T07:15:07.132413154Z","updated_at":"2026-11-02T15:53:33.681527Z"},{"id":"USN-8909-1","title":"libde265 vulnerability","description":"It was discovered that libde265 did not properly validate certain crafted\nH.265 bitstreams, leading to a NULL pointer dereference. An attacker could\npossibly use this issue to cause libde265 to crash, resulting in a denial\nof service.","status":"published","published":"2026-10-08T17:11:46Z","modified":"2026-10-10T01:11:51.820581981Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}