{"id":"CVE-2023-6603","aliases":["DEBIAN-CVE-2023-6603","DLA-4440-1","EUVD-2023-58826","GHSA-gxvx-w63c-jprw","JLSEC-2025-143","OESA-2026-3084","OESA-2026-3085","ROOT-OS-DEBIAN-11-CVE-2023-6603","UBUNTU-CVE-2023-6603","USN-7830-1","USN-7890-1","openSUSE-SU-2026:12064-1"],"status":"published","title":"Ffmpeg: null pointer dereference in ffmpeg hls parsing","description":"A flaw was found in FFmpeg's HLS playlist parsing. 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initialization.","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":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00578,"percentile":0.48097,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476","CWE-99"],"published":"2024-12-31T14:20:10Z","modified":"2026-10-28T02:31:00Z","fixes":[{"ecosystem":"Debian:12","package":"ffmpeg","fixed_in":["7:5.0.1-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ffmpeg","fixed_in":["7:5.0.1-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ffmpeg","fixed_in":["7:5.0.1-2"],"sources":["osv"]},{"ecosystem":"Julia","package":"FFMPEG_jll","fixed_in":["6.1.1+0"],"sources":["osv"]},{"ecosystem":"Julia","package":"FFplay_jll","fixed_in":["7.1.0+0"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ffmpeg","fixed_in":["7:2.8.17-0ubuntu0.1+esm13"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ffmpeg","fixed_in":["7:3.4.11-0ubuntu0.1+esm11"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ffmpeg","fixed_in":["7:4.2.7-0ubuntu0.1+esm11"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"ffmpeg","fixed_in":["7:4.4.2-0ubuntu0.22.04.1+esm10"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:5.0.1-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:5.0.1-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:5.0.1-2"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.3.9-0+deb11u2"}]}],"versions":["7:4.3.2-0+deb11u2","7:4.3.2-1","7:4.3.2-2","7:4.3.3-0+deb11u1","7:4.3.4-0+deb11u1","7:4.3.5-0+deb11u1","7:4.3.6-0+deb11u1","7:4.3.7-0+deb11u1","7:4.3.8-0+deb11u1","7:4.3.8-0+deb11u2","7:4.3.8-0+deb11u3","7:4.3.9-0+deb11u1"],"bundled":7},{"source":"osv","ecosystem":"Julia","package":"FFMPEG_jll","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.1.1+0"}]}]},{"source":"osv","ecosystem":"Julia","package":"FFplay_jll","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.1.0+0"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP4","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-43.oe2003sp4"}]}],"bundled":7},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-43.oe2203sp4"}]}],"bundled":7},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"libav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6:0.8.7-1ubuntu2","6:9.10-1ubuntu1","6:9.10-1ubuntu2","6:9.10-1ubuntu5","6:9.10-1ubuntu6","6:9.10-1ubuntu7","6:9.11-2ubuntu1","6:9.11-2ubuntu2","6:9.13-0ubuntu0.14.04.1","6:9.14-0ubuntu0.14.04.1","6:9.16-0ubuntu0.14.04.1","6:9.18-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.8.17-0ubuntu0.1+esm13"}]}],"versions":["7:2.7.2-1build1","7:2.8.1-1ubuntu1","7:2.8.2-1ubuntu1","7:2.8.3-1","7:2.8.4-1","7:2.8.4-1ubuntu1","7:2.8.4-1ubuntu2","7:2.8.4-1ubuntu3","7:2.8.4-1ubuntu4","7:2.8.6-1ubuntu1","7:2.8.6-1ubuntu2","7:2.8.8-0ubuntu0.16.04.1","7:2.8.10-0ubuntu0.16.04.1","7:2.8.11-0ubuntu0.16.04.1","7:2.8.14-0ubuntu0.16.04.1","7:2.8.15-0ubuntu0.16.04.1","7:2.8.15-0ubuntu0.16.04.1+esm1","7:2.8.17-0ubuntu0.1","7:2.8.17-0ubuntu0.1+esm1","7:2.8.17-0ubuntu0.1+esm2","7:2.8.17-0ubuntu0.1+esm3","7:2.8.17-0ubuntu0.1+esm4","7:2.8.17-0ubuntu0.1+esm5","7:2.8.17-0ubuntu0.1+esm6","7:2.8.17-0ubuntu0.1+esm7","7:2.8.17-0ubuntu0.1+esm8","7:2.8.17-0ubuntu0.1+esm9","7:2.8.17-0ubuntu0.1+esm10","7:2.8.17-0ubuntu0.1+esm11","7:2.8.17-0ubuntu0.1+esm12"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.4.11-0ubuntu0.1+esm11"}]}],"versions":["7:3.3.4-2","7:3.3.4-2build3","7:3.4-2ubuntu2","7:3.4-4","7:3.4-4build1","7:3.4.1-1","7:3.4.1-1build1","7:3.4.2-1","7:3.4.2-1build1","7:3.4.2-2","7:3.4.4-0ubuntu0.18.04.1","7:3.4.6-0ubuntu0.18.04.1","7:3.4.8-0ubuntu0.2","7:3.4.11-0ubuntu0.1","7:3.4.11-0ubuntu0.1+esm1","7:3.4.11-0ubuntu0.1+esm2","7:3.4.11-0ubuntu0.1+esm3","7:3.4.11-0ubuntu0.1+esm4","7:3.4.11-0ubuntu0.1+esm5","7:3.4.11-0ubuntu0.1+esm6","7:3.4.11-0ubuntu0.1+esm7","7:3.4.11-0ubuntu0.1+esm8","7:3.4.11-0ubuntu0.1+esm9","7:3.4.11-0ubuntu0.1+esm10"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0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This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.","status":"published","published":"2024-12-31T15:15:07.49Z","modified":"2026-06-17T06:51:04.387Z","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"},{"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-476"],"updated_at":"2026-11-02T14:09:20.080574Z"}],"osv":[{"id":"CVE-2023-6603","title":"Ffmpeg: null pointer dereference in ffmpeg hls parsing","description":"A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.","status":"published","published":"2024-12-31T14:20:10.69Z","modified":"2026-11-07T10:47:20.867339337Z","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":"2026-11-07T11:15:38.581573Z"},{"id":"DEBIAN-CVE-2023-6603","description":"A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.","status":"published","published":"2024-12-31T15:15:07.49Z","modified":"2026-10-26T18:02:57.586623469Z","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":"2026-11-02T15:45:41.533064Z"},{"id":"JLSEC-2025-143","title":"A flaw was found in FFmpeg's HLS playlist parsing","description":"A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.","status":"published","published":"2025-10-19T19:08:53.76Z","modified":"2026-07-18T00:00:18.781782864Z","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":"2026-11-02T15:47:17.805107Z"},{"id":"OESA-2026-3084","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in FFmpeg\u0026apos;s HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.(CVE-2023-6603)\n\nUnchecked Return Value, Out-of-bounds Read vulnerability in FFmpeg allows Read Sensitive Constants Within an Executable. This vulnerability is associated with program files  https://github.Com/FFmpeg/FFmpeg/blob/master/libavfilter/af_pan.C .\n\nThis issue affects FFmpeg: 7.1.\n\nIssue was fixed:  https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a\n\n https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a This issue was discovered by: Simcha Kosman(CVE-2025-0518)\n\nA NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.(CVE-2025-10256)\n\nA vulnerability, which was classified as critical, was found in FFmpeg up to 7.1. This affects the function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-1594)\n\nA flaw was found in FFmpeg’s ALS audio decoder, where it does not properly check for memory allocation failures. This can cause the application to crash when processing certain malformed audio files. While it does not lead to data theft or system control, it can be used to disrupt services and cause a denial of service.(CVE-2025-7700)\n\nA heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.(CVE-2026-30999)\n\nA flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser\u0026apos;s fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution.(CVE-2026-6385)","status":"published","published":"2026-07-19T11:11:58Z","modified":"2026-08-18T01:21:20.216644915Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3085","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in FFmpeg\u0026apos;s HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.(CVE-2023-6603)\n\nUnchecked Return Value, Out-of-bounds Read vulnerability in FFmpeg allows Read Sensitive Constants Within an Executable. This vulnerability is associated with program files  https://github.Com/FFmpeg/FFmpeg/blob/master/libavfilter/af_pan.C .\n\nThis issue affects FFmpeg: 7.1.\n\nIssue was fixed:  https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a\n\n https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a This issue was discovered by: Simcha Kosman(CVE-2025-0518)\n\nA NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.(CVE-2025-10256)\n\nA vulnerability, which was classified as critical, was found in FFmpeg up to 7.1. This affects the function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-1594)\n\nA flaw was found in FFmpeg’s ALS audio decoder, where it does not properly check for memory allocation failures. This can cause the application to crash when processing certain malformed audio files. While it does not lead to data theft or system control, it can be used to disrupt services and cause a denial of service.(CVE-2025-7700)\n\nA heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.(CVE-2026-30999)\n\nA flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser\u0026apos;s fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution.(CVE-2026-6385)","status":"published","published":"2026-07-19T11:11:58Z","modified":"2026-08-18T01:21:20.394159481Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"UBUNTU-CVE-2023-6603","description":"A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.","status":"published","published":"2024-12-31T15:15:00Z","modified":"2026-10-17T12:56:27.799032036Z","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"},{"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"},{"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":"2026-11-02T16:54:41.555387Z"},{"id":"DLA-4440-1","title":"ffmpeg - security update","status":"published","published":"2026-01-16T00:00:00Z","modified":"2026-01-17T00:30:05.565408Z","updated_at":"2026-11-02T15:46:12.7027Z"},{"id":"openSUSE-SU-2026:12064-1","title":"ffmpeg-4-4.4.8-6.1 on GA media","description":"These are all security issues fixed in the ffmpeg-4-4.4.8-6.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-06T00:00:00Z","modified":"2026-10-07T17:23:10.530398177Z","updated_at":"2026-11-02T16:58:40.245664Z"},{"id":"ROOT-OS-DEBIAN-11-CVE-2023-6603","title":"CVE-2023-6603 in rootio-ffmpeg - Patched by Root","description":"Root has patched CVE-2023-6603 in the rootio-ffmpeg package for Root:Debian:11. Multiple fixed versions available.","status":"withdrawn","published":"2025-09-15T13:56:35Z","modified":"2026-08-23T14:00:13.615273751Z","updated_at":"2026-11-02T15:53:28.80888Z"},{"id":"USN-7830-1","title":"ffmpeg vulnerabilities","description":"It was discovered that FFmpeg incorrectly handled the return values of\nfunctions in its Firequalizer filter and in the HTTP Live Streaming (HLS)\nimplementation, leading to a NULL pointer dereference. If a user was \ntricked into loading a crafted media file, a remote attacker could \npossibly use this issue to make FFmpeg crash, resulting in a denial\nof service. (CVE-2023-6603, CVE-2025-10256)\n\nIt was discovered that FFmpeg did not enforce an input format before\ntriggering the HTTP demuxer. A remote attacker could possibly use this\nissue to perform a Server-Side Request Forgery (SSRF) attack.\n(CVE-2025-6605)\n\nIt was discovered that FFmpeg incorrectly handled memory allocation in the\nALS audio decoder. If a user was tricked into loading a crafted media file,\na remote attacker could possibly use this issue to make FFmpeg crash,\nresulting in a denial of service. (CVE-2025-7700)\n\nIt was discovered that FFmpeg incorrectly handled memory in the JPEG 2000\ndecoder, which could lead to a heap buffer overflow. If a user or \napplication were tricked into opening a specially crafted file, an \nattacker could possibly use this issue to cause a denial of service \nor leak sensitive information. (CVE-2025-9951)","status":"published","published":"2025-10-21T11:20:52Z","modified":"2026-04-27T18:23:20.840957Z","updated_at":"2026-11-02T16:58:21.91885Z"},{"id":"USN-7890-1","title":"ffmpeg vulnerability","description":"It was discovered that FFmpeg did not properly handle the parsing of\ncertain malformed HLS playlists. If a user were tricked into opening a\nspecially crafted HLS playlist, an attacker could possibly use this issue\nto cause FFmpeg to crash, resulting in a denial of service.","status":"published","published":"2025-11-26T11:40:32Z","modified":"2026-06-25T13:32:31.43627083Z","updated_at":"2026-11-02T16:58:21.91885Z"}]}}