Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Set merge to zero early in af_alg_sendmsg If an error causes af_alg_sendmsg to abort, ctx->merge may contain a garbage value from the previous loop. This may then trigger a crash on the next entry into af_alg_sendmsg 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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/045ee26aa3920a47ec46d7fcb302420bf01fd753 Patch
- git.kernel.org/stable/c/2374c11189ef704a3e4863646369f1b8e6a27d71 Patch
- git.kernel.org/stable/c/24c1106504c625fabd3b7229611af617b4c27ac7 Patch
- git.kernel.org/stable/c/6241b9e2809b12da9130894cf5beddf088dc1b8a Patch
- git.kernel.org/stable/c/9574b2330dbd2b5459b74d3b5e9619d39299fc6f Patch
- git.kernel.org/stable/c/28f6f37abca7c5c9eb3959c66310f1d4d98b8aaf
- git.kernel.org/stable/c/db2b42425dfbde4983b0c20fb7cfa05f70e6a745
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
- cert-portal.siemens.com/productcert/html/ssa-457936.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 9 November 2026
- CWE
- CWE-908
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.