media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try()
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try() v4l2_subdev_call_state_try() macro allocates a subdev state with __v4l2_subdev_state_alloc(), but does not check the returned value. If __v4l2_subdev_state_alloc fails, it returns an ERR_PTR, and that would cause v4l2_subdev_call_state_try() to crash. Add proper error handling to v4l2_subdev_call_state_try().
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.157, 6.6.113, 6.12.54, 6.17.4, 6.18
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40207
- 2026-10-03 Alias added: GHSA-2m92-rj5f-pp8g
References
Other 5
- https://git.kernel.org/stable/c/5b0057459cdc243ffb35617603142dcace09c711
- https://git.kernel.org/stable/c/ed30811fbed40751deb952bde534aa2632dc0bf7
- https://git.kernel.org/stable/c/94e6336dc1f06a06f5b4cd04d4a012bba34f2857
- https://git.kernel.org/stable/c/a553530b3314a0bdc98cf114cdbe204551a70a00
- https://git.kernel.org/stable/c/f37df9a0eb5e43fcfe02cbaef076123dc0d79c7e
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-40207 · CVE Program
- CVE-2025-40207 · NVD
- FIRST EPSS
- GHSA-2m92-rj5f-pp8g · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40207 · Red Hat security data · CC BY 4.0
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