CVE-2026-75147
Publication date 19 August 2026
Last updated 13 October 2026
Ubuntu priority
Description
FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ffmpeg | 26.04 LTS resolute |
Fixed 7:8.0.1-3ubuntu2+esm5
|
| 24.04 LTS noble |
Fixed 7:6.1.1-3ubuntu5+esm15
|
|
| 22.04 LTS jammy |
Fixed 7:4.4.2-0ubuntu0.22.04.1+esm17
|
|
| 20.04 LTS focal |
Fixed 7:4.2.7-0ubuntu0.1+esm18
|
|
| 18.04 LTS bionic |
Fixed 7:3.4.11-0ubuntu0.1+esm16
|
|
| 16.04 LTS xenial |
Fixed 7:2.8.17-0ubuntu0.1+esm18
|
|
| libav | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 14.04 LTS trusty |
Needs evaluation
|
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| Package | Patch details |
|---|---|
| ffmpeg |
Severity score breakdown
CVSS version:
Base score
6.9 · Medium
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
Base score
7.1 · High
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8915-1
- FFmpeg vulnerabilities
- 12 October 2026