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Description

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Commit 1b34cbbf4f01 ("crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg") changed some fields from bool to 1-bit bitfields of type u32. However, some assignments to these fields, specifically 'more' and 'merge', assign values greater than 1. These relied on C's implicit conversion to bool, such that zero becomes false and nonzero becomes true. With a 1-bit bitfields of type u32 instead, mod 2 of the value is taken instead, resulting in 0 being assigned in some cases when 1 was intended. Fix this by restoring the bool type.

PUBLISHED Reserved 2025-04-16 | Published 2025-10-24 | Updated 2025-10-24 | Assigner Linux

Product status

Default status
unaffected

0f28c4adbc4a97437874c9b669fd7958a8c6d6ce (git) before 3a21698ace915a445bce2d0dcfc84b6d2199baf7
affected

e4c1ec11132ec466f7362a95f36a506ce4dc08c9 (git) before d382d6daf0184490f366562469a5673f65ee2662
affected

1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8 (git) before 54506c6335690f4ef1b9f154e34f5a604c72c1ed
affected

7c4491b5644e3a3708f3dbd7591be0a570135b84 (git) before 8703940bd30b5ad94408d28d7192db2491cd3592
affected

9aee87da5572b3a14075f501752e209801160d3d (git) before 316b090c2fee964c307a634fecc7df269664b158
affected

45bcf60fe49b37daab1acee57b27211ad1574042 (git) before fbe96bd25423e61273d8831e995260b429d850b6
affected

1b34cbbf4f011a121ef7b2d7d6e6920a036d5285 (git) before d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb
affected

Default status
unaffected

6.1.154 (semver) before 6.1.155
affected

6.6.108 (semver) before 6.6.109
affected

6.12.49 (semver) before 6.12.50
affected

6.16.9 (semver) before 6.16.10
affected

References

git.kernel.org/...c/3a21698ace915a445bce2d0dcfc84b6d2199baf7

git.kernel.org/...c/d382d6daf0184490f366562469a5673f65ee2662

git.kernel.org/...c/54506c6335690f4ef1b9f154e34f5a604c72c1ed

git.kernel.org/...c/8703940bd30b5ad94408d28d7192db2491cd3592

git.kernel.org/...c/316b090c2fee964c307a634fecc7df269664b158

git.kernel.org/...c/fbe96bd25423e61273d8831e995260b429d850b6

git.kernel.org/...c/d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb

cve.org (CVE-2025-40022)

nvd.nist.gov (CVE-2025-40022)

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