CVE-2025-39714: debian linux — Fix

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]

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.14 — 5.4.297
linux	linux_kernel	5.5 — 5.10.241
linux	linux_kernel	5.11 — 5.15.190
linux	linux_kernel	5.16 — 6.1.149
linux	linux_kernel	6.2 — 6.6.103
linux	linux_kernel	6.7 — 6.12.44
linux	linux_kernel	6.13 — 6.16.4
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9 https://git.kernel.org/stable/c/5427dda195d6baf23028196fd55a0c90f66ffa61 https://git.kernel.org/stable/c/7e40e0bb778907b2441bff68d73c3eb6b6cd319f https://git.kernel.org/stable/c/9f886d21e235c4bd038cb20f6696084304197ab3 https://git.kernel.org/stable/c/c35e7c7a004ef379a1ae7c7486d4829419acad1d https://git.kernel.org/stable/c/c3d75524e10021aa5c223d94da4996640aed46c0 https://git.kernel.org/stable/c/ee7bade8b9244834229b12b6e1e724939bedd484 https://git.kernel.org/stable/c/ef9b3c22405192afaa279077ddd45a51db90b83d

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Frequently Asked Questions

What is CVE-2025-39714? +

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] It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-39714? +

CVE-2025-39714 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-39714? +

CVE-2025-39714 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-39714? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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