crypto: af_alg - Fix incorrect boolean values in af_alg_ctx
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.
CVE-2025-40022
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-40022
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0f28c4adbc4a97437874c9b669fd7958a8c6d6ce",
"lessThan": "3a21698ace915a445bce2d0dcfc84b6d2199baf7",
"versionType": "git"
},
{
"status": "affected",
"version": "e4c1ec11132ec466f7362a95f36a506ce4dc08c9",
"lessThan": "d382d6daf0184490f366562469a5673f65ee2662",
"versionType": "git"
},
{
"status": "affected",
"version": "1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8",
"lessThan": "54506c6335690f4ef1b9f154e34f5a604c72c1ed",
"versionType": "git"
},
{
"status": "affected",
"version": "7c4491b5644e3a3708f3dbd7591be0a570135b84",
"lessThan": "8703940bd30b5ad94408d28d7192db2491cd3592",
"versionType": "git"
},
{
"status": "affected",
"version": "9aee87da5572b3a14075f501752e209801160d3d",
"lessThan": "316b090c2fee964c307a634fecc7df269664b158",
"versionType": "git"
},
{
"status": "affected",
"version": "45bcf60fe49b37daab1acee57b27211ad1574042",
"lessThan": "fbe96bd25423e61273d8831e995260b429d850b6",
"versionType": "git"
},
{
"status": "affected",
"version": "1b34cbbf4f011a121ef7b2d7d6e6920a036d5285",
"lessThan": "d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb",
"versionType": "git"
}
],
"programFiles": [
"include/crypto/if_alg.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1.154",
"lessThan": "6.1.155",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.108",
"lessThan": "6.6.109",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.49",
"lessThan": "6.12.50",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.16.9",
"lessThan": "6.16.10",
"versionType": "semver"
}
],
"programFiles": [
"include/crypto/if_alg.h"
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2025-40022
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27080 · Revision 1
- Added to Heist Feed
- Publisher date