CVE-2026-12706: Red Hat Enterprise Linux AI (RHEL AI) 3 · Use After Free
Affects Red Hat Enterprise Linux AI (RHEL AI) 3Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 1 Nov 2026, 11:02 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 19 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux AI (RHEL AI) 3ffmpeg | Affected– | Fixed in– |
| Red Hat Enterprise Linux AI (RHEL AI) 3nv-codec-headers | Affected– | Fixed in– |
| Red Hat Enterprise Linux AI (RHEL AI) 3rhelai3/bootc-aws-cuda-rhel9 | Affected– | Fixed in– |
| Red Hat Enterprise Linux AI (RHEL AI) 3rhelai3/bootc-azure-cuda-rhel9 | Affected– | Fixed in– |
| Red Hat Enterprise Linux AI (RHEL AI) 3rhelai3/bootc-azure-rocm-rhel9 | Affected– | Fixed in– |
| Red Hat Enterprise Linux AI (RHEL AI) 3rhelai3/bootc-cuda-rhel9 | Affected– | Fixed in– |
AI-suggested
Until a patch is available, users should exercise caution when opening untrusted AVI files containing RASC video streams.
Description
A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).
References
- access.redhat.com/security/cve/CVE-2026-12706 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2490710 (opens in a new tab)
- lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/ (opens in a new tab)
- patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/ (opens in a new tab)