Riskcovery

CVE-2025-39714

media: usbtv: Lock resolution while streaming

State
Published
Severity
7.8 High
Published
Sep 5, 2025
Updated
Aug 5, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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]

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before c35e7c7a004ef379a1ae7c7486d4829419acad1dAffected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before ee7bade8b9244834229b12b6e1e724939bedd484Affected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before 5427dda195d6baf23028196fd55a0c90f66ffa61Affected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before ef9b3c22405192afaa279077ddd45a51db90b83dAffected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before 3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9Affected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before c3d75524e10021aa5c223d94da4996640aed46c0Affected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before 9f886d21e235c4bd038cb20f6696084304197ab3Affected
  • 0e0fe3958fdd13dbf55c3a787acafde6efd04272 to before 7e40e0bb778907b2441bff68d73c3eb6b6cd319fAffected
LinuxLinux
  • 3.14Affected
  • before 3.14Not affected
  • 5.4.297 through 5.4.*Not affected
  • 5.10.241 through 5.10.*Not affected
  • 5.15.190 through 5.15.*Not affected
  • 6.1.149 through 6.1.*Not affected
  • 6.6.103 through 6.6.*Not affected
  • 6.12.44 through 6.12.*Not affected
  • 6.16.4 through 6.16.*Not affected
  • 6.17 and laterNot affected

References

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