CVE-2026-65705
Publication date 23 July 2026
Last updated 4 September 2026
Ubuntu priority
Description
FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinit_filter 0. When config_input() allocates the points traversal stack based on initial frame dimensions and a subsequent larger frame is processed, filter_frame() performs flood-fill neighbor pushes beyond the original allocation boundary, resulting in heap corruption and process crash with potential for code execution depending on heap layout and process hardening.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ffmpeg | 26.04 LTS resolute |
Vulnerable
|
| 24.04 LTS noble |
Fixed 7:6.1.1-3ubuntu5+esm13
|
|
| 22.04 LTS jammy |
Fixed 7:4.4.2-0ubuntu0.22.04.1+esm15
|
|
| 20.04 LTS focal |
Fixed 7:4.2.7-0ubuntu0.1+esm16
|
|
| 18.04 LTS bionic |
Fixed 7:3.4.11-0ubuntu0.1+esm15
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 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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Severity score breakdown
CVSS version:
Base score
7.3 · High
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base score
7.8 · High
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8716-1
- FFmpeg vulnerabilities
- 3 September 2026