CVE-2025-40291 (GCVE-0-2025-40291)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2025-12-08 00:46
VLAI?
Title
io_uring: fix regbuf vector size truncation
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix regbuf vector size truncation There is a report of io_estimate_bvec_size() truncating the calculated number of segments that leads to corruption issues. Check it doesn't overflow "int"s used later. Rough but simple, can be improved on top.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9ef4cbbcb4ac3786a1a4164507511b76b2a572c5 , < 826ce37a842633efe1bb763e4b13045d74060d72 (git)
Affected: 9ef4cbbcb4ac3786a1a4164507511b76b2a572c5 , < 146eb58629f45f8297e83d69e64d4eea4b28d972 (git)
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    Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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