{"id":"CVE-2020-20902","aliases":["DEBIAN-CVE-2020-20902","DLA-3010-1","DSA-4722-1","EUVD-2020-13682","GHSA-fv2v-8v2v-g9q3","SUSE-SU-2021:3521-1","SUSE-SU-2023:0005-1","UBUNTU-CVE-2020-20902","USN-5167-1","openSUSE-SU-2021:3521-1"],"status":"published","title":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter...","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of 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":[{"id":"CVE-2020-20902","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","status":"published","published":"2021-09-20T15:20:00Z","modified":"2024-08-04T14:22:25.42Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-13682","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","status":"published","published":"2021-09-20T15:20:00Z","modified":"2024-08-04T14:22:25Z","updated_at":"2026-11-03T03:07:24.233243Z"}],"ghsa":[{"id":"GHSA-fv2v-8v2v-g9q3","title":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter...","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","status":"published","published":"2022-05-24T19:15:15Z","modified":"2023-01-30T05:02:25Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:38.066268Z"}],"nvd":[{"id":"CVE-2020-20902","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of 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computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","status":"published","published":"2021-09-20T16:15:00Z","modified":"2026-04-22T12:32:44.349083Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"DLA-3010-1","title":"ffmpeg - security update","status":"published","published":"2022-05-16T00:00:00Z","modified":"2026-03-09T01:21:45.70119Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DSA-4722-1","title":"ffmpeg - security update","status":"published","published":"2020-07-08T00:00:00Z","modified":"2026-03-09T02:11:02.832797Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"openSUSE-SU-2021:3521-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2021-3566: Fixed information leak (bsc#1189166).\n- CVE-2021-38093: Fixed integer overflow vulnerability in filter_robert() (bsc#1190734)\n- CVE-2021-38092: Fixed integer overflow vulnerability in filter_prewitt() (bsc#1190733)\n- CVE-2021-38094: Fixed integer overflow vulnerability in filter_sobel() (bsc#1190735)\n- CVE-2020-22037: Fixed denial of service vulnerability caused by memory leak in avcodec_alloc_context3() (bsc#1186756)\n- CVE-2020-35965: Fixed out-of-bounds write in decode_frame() (bsc#1187852)\n- CVE-2020-20892: Fixed an issue with filter_frame() (bsc#1190719)\n- CVE-2020-20891: Fixed a buffer overflow vulnerability in config_input() (bsc#1190718)\n- CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name (bsc#1190722)\n- CVE-2020-20896: Fixed an issue with latm_write_packet() (bsc#1190723)\n- CVE-2020-20899: Fixed a buffer overflow vulnerability in config_props() (bsc#1190726)\n- CVE-2020-20902: Fixed an out-of-bounds read vulnerabilit long_term_filter() (bsc#1190729)\n","status":"published","published":"2021-10-26T13:39:27Z","modified":"2026-02-04T04:37:04.307457Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"SUSE-SU-2021:3521-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2021-3566: Fixed information leak (bsc#1189166).\n- CVE-2021-38093: Fixed integer overflow vulnerability in filter_robert() (bsc#1190734)\n- CVE-2021-38092: Fixed integer overflow vulnerability in filter_prewitt() (bsc#1190733)\n- CVE-2021-38094: Fixed integer overflow vulnerability in filter_sobel() (bsc#1190735)\n- CVE-2020-22037: Fixed denial of service vulnerability caused by memory leak in avcodec_alloc_context3() (bsc#1186756)\n- CVE-2020-35965: Fixed out-of-bounds write in decode_frame() (bsc#1187852)\n- CVE-2020-20892: Fixed an issue with filter_frame() (bsc#1190719)\n- CVE-2020-20891: Fixed a buffer overflow vulnerability in config_input() (bsc#1190718)\n- CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name (bsc#1190722)\n- CVE-2020-20896: Fixed an issue with latm_write_packet() (bsc#1190723)\n- CVE-2020-20899: Fixed a buffer overflow vulnerability in config_props() (bsc#1190726)\n- CVE-2020-20902: Fixed an out-of-bounds read vulnerabilit long_term_filter() (bsc#1190729)\n","status":"published","published":"2021-10-26T13:39:26Z","modified":"2026-02-04T03:01:13.927489Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2023:0005-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2022-3109: Fixed null pointer dereference in vp3_decode_frame() (bsc#1206442).\n- CVE-2020-22042: Fixed a denial of service vulnerability led by a memory leak in the link_filter_inouts function in libavfilter/graphparser.c. (bsc#1186761)\n- CVE-2021-38094: Fixed an integer overflow vulnerability in function filter_sobel in libavfilter/vf_convolution.c (bsc#1190735).\n- CVE-2021-38093: Fixed an integer Overflow vulnerability in function filter_robert in libavfilter/vf_convolution.c (bsc#1190734).\n- CVE-2021-38092: Fixed an Integer Overflow vulnerability in function filter_prewitt in libavfilter/vf_convolution.c (bsc#1190733).\n- CVE-2020-22037: Fixed a denial of service vulnerability due to a memory leak in avcodec_alloc_context3 at options.c (bsc#1186756).\n- CVE-2021-3566: Fixed an exposure of sensitive information on ffmpeg version prior to 4.3 (bsc#1189166).\n- CVE-2020-35965: Fixed an out-of-bounds write in decode_frame in libavcodec/exr.c (bsc#1187852).\n- CVE-2020-20892: Fixed a division by zero in function filter_frame in libavfilter/vf_lenscorrection.c (bsc#1190719).\n- CVE-2020-20891: Fixed a buffer overflow vulnerability in function config_input in libavfilter/vf_gblur.c (bsc#1190718).\n- CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name in libavfilter/vf_avgblur.c (bsc#1190722).\n- CVE-2020-20896: Fixed a NULL pointer dereference in function latm_write_packet in libavformat/latmenc.c (bsc#1190723).\n- CVE-2020-20899: Fixed a buffer overflow vulnerability in function config_props in libavfilter/vf_bwdif.c (bsc#1190726).\n- CVE-2020-20902: Fixed an out-of-bounds read vulnerability in long_term_filter function in g729postfilter.c (bsc#1190729).\n","status":"published","published":"2023-01-02T10:39:08Z","modified":"2026-02-04T04:15:17.492211Z","updated_at":"2026-11-02T15:53:51.853735Z"},{"id":"USN-5167-1","title":"ffmpeg vulnerabilities","description":"It was discovered that FFmpeg did not properly verify certain input when\nprocessing video and audio files. An attacker could possibly use this to send\nspecially crafted input to the application, force a division by zero, and\ncause a denial of service (application crash). (CVE-2020-20445, CVE-2020-20446,\nCVE-2020-20453, CVE-2020-20892)\n\nIt was discovered that FFmpeg did not properly perform certain bit shift and\nmemory operations. An attacker could possibly use this issue to expose\nsensitive information. (CVE-2020-20902)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-21041,\nCVE-2020-20451, CVE-2020-21688, CVE-2020-21697, CVE-2020-22020,\nCVE-2020-22021, CVE-2020-22022, CVE-2020-22025, CVE-2020-22031,\nCVE-2020-22032, CVE-2020-22037, CVE-2020-22040, CVE-2020-22041,\nCVE-2020-22042, CVE-2020-22044)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-22016,\nCVE-2020-22046, CVE-2020-22049, CVE-2020-22054)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-35965)\n\nIt was discovered that FFmpeg did not properly handle data assigned to the tty\ndemuxer. An attacker could possibly use this issue to send specially crafted\ninput to the application and expose sensitive information. (CVE-2021-3566)\n\nIt was discovered that FFmpeg did not perform checks on function return\nvalues when encoding and formatting input video and audio files. An attacker\ncould possibly use this issue to cause a denial of service (application crash)\nor execute arbitrary code. (CVE-2021-38114, CVE-2021-38171)\n\nIt was discovered that FFmpeg did not properly sanitize function returned data\nwhen calculating frame duration values. An attacker could possibly use this\nissue to cause an assertion failure and then cause a denial of service\n(application crash). (CVE-2021-38291)\n","status":"published","published":"2022-06-13T16:13:57Z","modified":"2026-06-25T13:30:52.229225755Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}