CVE-2025-40022
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-40022
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40022.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-40022
- Downstream
- Published
- 2025-10-24T12:24:57Z
- Modified
- 2025-10-24T22:50:43.643004Z
- Summary
- crypto: af_alg - Fix incorrect boolean values in af_alg_ctx
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
crypto: afalg - Fix incorrect boolean values in afalg_ctx
Commit 1b34cbbf4f01 ("crypto: afalg - Disallow concurrent writes in afalg_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.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/316b090c2fee964c307a634fecc7df269664b158
- https://git.kernel.org/stable/c/3a21698ace915a445bce2d0dcfc84b6d2199baf7
- https://git.kernel.org/stable/c/54506c6335690f4ef1b9f154e34f5a604c72c1ed
- https://git.kernel.org/stable/c/8703940bd30b5ad94408d28d7192db2491cd3592
- https://git.kernel.org/stable/c/d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb
- https://git.kernel.org/stable/c/d382d6daf0184490f366562469a5673f65ee2662
- https://git.kernel.org/stable/c/fbe96bd25423e61273d8831e995260b429d850b6
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0f28c4adbc4a97437874c9b669fd7958a8c6d6ceFixed3a21698ace915a445bce2d0dcfc84b6d2199baf7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducede4c1ec11132ec466f7362a95f36a506ce4dc08c9Fixedd382d6daf0184490f366562469a5673f65ee2662
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8Fixed54506c6335690f4ef1b9f154e34f5a604c72c1ed
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7c4491b5644e3a3708f3dbd7591be0a570135b84Fixed8703940bd30b5ad94408d28d7192db2491cd3592
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9aee87da5572b3a14075f501752e209801160d3dFixed316b090c2fee964c307a634fecc7df269664b158
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced45bcf60fe49b37daab1acee57b27211ad1574042Fixedfbe96bd25423e61273d8831e995260b429d850b6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1b34cbbf4f011a121ef7b2d7d6e6920a036d5285Fixedd0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb
Affected versions
v6.*
v6.1.154
v6.12.49
v6.16.9
v6.17-rc2
v6.17-rc3
v6.17-rc4
v6.17-rc5
v6.17-rc6
v6.17-rc7
v6.6.108
Database specific
vanir_signatures
[
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d382d6daf0184490f366562469a5673f65ee2662",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-3f78f566",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@54506c6335690f4ef1b9f154e34f5a604c72c1ed",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-438c40d8",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@316b090c2fee964c307a634fecc7df269664b158",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-6967423b",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8703940bd30b5ad94408d28d7192db2491cd3592",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-6bd1d15d",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@fbe96bd25423e61273d8831e995260b429d850b6",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-8b8af8c5",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3a21698ace915a445bce2d0dcfc84b6d2199baf7",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-9fe565cc",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb",
"target": {
"file": "include/crypto/if_alg.h"
},
"id": "CVE-2025-40022-de6e6002",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"22459333528974661388137289493339017039",
"63208587456099187812636793141584308679",
"195843256511867572426840638828524745117",
"164233011334217953122554797030322007899"
]
},
"deprecated": false,
"signature_version": "v1"
}
]