CVE-2020-35965: debian debian_linux Out-of-bounds Write
CVSS: 7.5v3.1HighModified
AliasesMGASA-2021-0273UBUNTU-CVE-2020-35965DEBIAN-CVE-2020-35965
Published 04-01-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-35965 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 2.31% chance of exploitation in the next 30 days, higher than 83.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
2.31%
0%100%
Low · +0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 04-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in calculations of when to perform memset zero operations.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.31%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
+0.05 pp
From 2.26% on 19-09-2026
19-09-202619-10-2026
EPSS score2.31%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugs.chromium.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- ffmpeg< 7:4.3.1-6
- debian_linuxEOL9.0 | 10.0
Ffmpeg1 product
- ffmpeg≥ 4.3.1, < 4.4
Mageia1 product
- ffmpeg< 4.1.6-1.1.mga7 | < 4.1.6-1.1.mga7.tainted
Ubuntu1 product
- ffmpeg< 7:2.8.17-0ubuntu0.1+esm4 | < 7:3.4.11-0ubuntu0.1 | < 7:4.2.7-0ubuntu0.1
4 vendors · 5 products
References
14 links- github.com/FFmpeg/FFmpeg/commit/b0a8b40294ea212c1938348ff112ef1b9bf16bb3X Refsource MISCREPORTPatchThird Party Advisory
- bugs.chromium.org/p/oss-fuzz/issues/detail?id=26532X Refsource MISCREPORTExploitIssue TrackingThird Party Advisory
- github.com/FFmpeg/FFmpeg/commit/3e5959b3457f7f1856d997261e6ac672bba49e8bX Refsource MISCREPORTPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2021/01/msg00026.htmlMailing ListX Refsource MLISTThird Party Advisory