CVE-2025-39714

media: usbtv: Lock resolution while streaming

MEDIUM

5.5

CVSS Score

Published: September 5, 2025 at 05:21 PM UTC

Updated: October 19, 2026 at 09:10 PM UTC

3 products affected across 3 vendorsLinux KernelDebian LinuxSIMATIC CN 4100

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

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]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

All versions3.14 ≤ v < 5.4.2975.11 ≤ v < 5.15.1905.16 ≤ v < 6.1.1495.5 ≤ v < 5.10.2416.13 ≤ v < 6.16.46.2 ≤ v < 6.6.1036.7 ≤ v < 6.12.440e0fe3958fdd13dbf55c3a787acafde6efd042723.14

Vendor states this is fixed in 3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9 (fixed)

Vendor states this is fixed in 5427dda195d6baf23028196fd55a0c90f66ffa61 (fixed)

Vendor states this is fixed in 7e40e0bb778907b2441bff68d73c3eb6b6cd319f (fixed)

Vendor states this is fixed in 9f886d21e235c4bd038cb20f6696084304197ab3 (fixed)

Vendor states this is fixed in c35e7c7a004ef379a1ae7c7486d4829419acad1d (fixed)

Vendor states this is fixed in c3d75524e10021aa5c223d94da4996640aed46c0 (fixed)

Vendor states this is fixed in ee7bade8b9244834229b12b6e1e724939bedd484 (fixed)

Vendor states this is fixed in ef9b3c22405192afaa279077ddd45a51db90b83d (fixed)

Vendor states this is fixed in 3.14 (unaffected)

Vendor states this is fixed in 5.10.241 (unaffected)

Vendor states this is fixed in 5.15.190 (unaffected)

Vendor states this is fixed in 5.4.297 (unaffected)