| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3010-1, DSA-4722-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ffmpeg (PTS) | stretch (security) | 7:3.2.18-0+deb9u1 | fixed |
| stretch (lts), stretch | 7:3.2.19-0+deb9u5 | fixed | |
| buster, buster (lts) | 7:4.1.11-0+deb10u2 | fixed | |
| buster (security) | 7:4.1.11-0+deb10u1 | fixed | |
| bullseye | 7:4.3.7-0+deb11u1 | fixed | |
| bullseye (security) | 7:4.3.8-0+deb11u1 | fixed | |
| bookworm (security), bookworm | 7:5.1.6-0+deb12u1 | fixed | |
| sid, trixie | 7:7.1-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ffmpeg | source | stretch | 7:3.2.18-0+deb9u1 | DLA-3010-1 | ||
| ffmpeg | source | buster | 7:4.1.6-1~deb10u1 | DSA-4722-1 | ||
| ffmpeg | source | (unstable) | 7:4.2.2-1 |
https://trac.ffmpeg.org/ticket/8176
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=5f0acc5064ed501cb40d4aaccae2b3ce5c4552fd (4.3)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=2c78a76cb0443f8a12a5eadc3b58373aa2f4ab22 (4.3)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=b97aaf791f6ea3506a6252ecef6a1a0e9a542e04 (4.2.2)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=81672bf00f3b5a3c025034f4b2e33d67b72f3839 (4.2.2)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=a0c91fb0f0641f9f35f650281a176657907097cf (4.1.5)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=abf9627f70ed8467b1646d56205e61f965f11468 (4.1.9)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=1cff89a11fa051696109565b3bf88c94479374eb (3.2.15)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=abf9627f70ed8467b1646d56205e61f965f11468 (3.2.17)