CVE-2026-125201
Published:November 09, 2026
Updated:November 10, 2026
FFmpeg 7.0 before 8.1.3 and 9.x before 9.0.2 contains a heap out-of-bounds write vulnerability in vk_av1_decode_slice() in libavcodec/vulkan_av1.c because the tile-count limit is checked only on entry. Attackers can supply a crafted AV1 stream with more than 256 tiles decoded via the Vulkan hardware accelerator to overflow tile_sizes and corrupt heap memory.
Affected Packages
https://github.com/FFmpeg/FFmpeg.git (GITHUB):
Affected version(s) =n6.1 <n8.1.3 || >=n6.1.1 <n8.1.3 || >=n7.0 <n8.1.3 || >=n8.0 <n8.1.3Fix Suggestion:
Update to version n8.1.3https://github.com/FFmpeg/FFmpeg.git (GITHUB):
Affected version(s) =n8.2-dev <n9.0.2 || >=n9.0 <n9.0.2Fix Suggestion:
Update to version n9.0.2Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Write