Medium severity5.5NVD Advisory· Published Apr 24, 2026· Updated Apr 27, 2026
CVE-2026-31639
CVE-2026-31639
Description
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix key reference count leak from call->key
When creating a client call in rxrpc_alloc_client_call(), the code obtains a reference to the key. This is never cleaned up and gets leaked when the call is destroyed.
Fix this by freeing call->key in rxrpc_destroy_call().
Before the patch, it shows the key reference counter elevated:
$ cat /proc/keys | grep afs@54321 1bffe9cd I--Q--i 8053480 4169w 3b010000 1000 1000 rxrpc afs@54321: ka $
After the patch, the invalidated key is removed when the code exits:
$ cat /proc/keys | grep afs@54321 $
AI Insight
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Affected products
9cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.2.1,<6.6.135
- cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/2e6ef713b1598f6acd7f302fa6b12b6731c89914nvdPatch
- git.kernel.org/stable/c/978108902ee4ef2b348ff7ec36ad014dc5bc6dc6nvdPatch
- git.kernel.org/stable/c/d666540d217e8d420544ebdfbadeedd623562733nvdPatch
- git.kernel.org/stable/c/e6b7943c5dc875647499da09bf4d50a8557ab0c3nvdPatch
- git.kernel.org/stable/c/f1a7a3ab0f35f83cf11bba906b9e948cf3788c28nvdPatch
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