CVE-2026-38347
Publication date 28 August 2026
Last updated 13 October 2026
Ubuntu priority
Description
A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ffmpeg | 26.04 LTS resolute |
Not affected
|
| 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: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8915-1
- FFmpeg vulnerabilities
- 12 October 2026