CVE-2025-39714
HIGH severity · CVSS 7.8
7.8CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: media: usbtv: Lock resolution while streaming When an program is streaming (ffplay) and another program (qv4l2) changes the TV standard from NTSC to PAL, the kernel crashes due to trying to copy to unmapped memory. Changing from NTSC to PAL increases the resolution in the usbtv struct, but the video plane buffer isn't adjusted, so it overflows. [hverkuil: call vb2_is_busy instead of vb2_is_streaming]
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9Patch
- https://git.kernel.org/stable/c/5427dda195d6baf23028196fd55a0c90f66ffa61Patch
- https://git.kernel.org/stable/c/7e40e0bb778907b2441bff68d73c3eb6b6cd319fPatch
- https://git.kernel.org/stable/c/9f886d21e235c4bd038cb20f6696084304197ab3Patch
- https://git.kernel.org/stable/c/c35e7c7a004ef379a1ae7c7486d4829419acad1dPatch
- https://git.kernel.org/stable/c/c3d75524e10021aa5c223d94da4996640aed46c0Patch
- https://git.kernel.org/stable/c/ee7bade8b9244834229b12b6e1e724939bedd484Patch
- https://git.kernel.org/stable/c/ef9b3c22405192afaa279077ddd45a51db90b83dPatch