CVE-2025-39931

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Source
https://cve.org/CVERecord?id=CVE-2025-39931
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39931.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-39931
Downstream
Related
Published
2025-10-04T07:30:55.964Z
Modified
2026-03-23T05:12:07.630148925Z
Summary
crypto: af_alg - Set merge to zero early in af_alg_sendmsg
Details

In the Linux kernel, the following vulnerability has been resolved:

crypto: afalg - Set merge to zero early in afalg_sendmsg

If an error causes afalgsendmsg to abort, ctx->merge may contain a garbage value from the previous loop. This may then trigger a crash on the next entry into afalgsendmsg when it attempts to do a merge that can't be done.

Fix this by setting ctx->merge to zero near the start of the loop.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39931.json"
}
References

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
Introduced
8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Fixed
6241b9e2809b12da9130894cf5beddf088dc1b8a
Fixed
2374c11189ef704a3e4863646369f1b8e6a27d71
Fixed
24c1106504c625fabd3b7229611af617b4c27ac7
Fixed
045ee26aa3920a47ec46d7fcb302420bf01fd753
Fixed
9574b2330dbd2b5459b74d3b5e9619d39299fc6f

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39931.json"