rxrpc: Fix key reference count leak from call->key
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 $
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.12.82, 6.18.23, 6.19.13, 6.6.135
- CVEs
- CVE-2026-31639
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:56 UTC · Revision 1
Source evidence
rxrpc: Fix key reference count leak from call->key
core-osv · Original sourcePublished 24 Apr 2026, 14:44 UTC
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 $
osv:CVE-2026-31639
Kernel
Fixed versions: 6.6.135, 6.12.82, 6.18.23, 6.19.13
Complete source record
{
"id": "c81aefed6c3155558f94704e905faa9b7d8fef4c9fa6103d004469df4b8b4844",
"url": "https://osv.dev/vulnerability/CVE-2026-31639",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "rxrpc: Fix key reference count leak from call->key",
"summary": "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 $",
"evidence": "osv:CVE-2026-31639",
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"modified": "2026-10-28T02:30:38.324476665Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/978108902ee4ef2b348ff7ec36ad014dc5bc6dc6",
"https://git.kernel.org/stable/c/d666540d217e8d420544ebdfbadeedd623562733",
"https://git.kernel.org/stable/c/e6b7943c5dc875647499da09bf4d50a8557ab0c3",
"https://git.kernel.org/stable/c/f1a7a3ab0f35f83cf11bba906b9e948cf3788c28",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31639.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-31639",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"related_cves": [
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 505526,
"published_at": "2026-04-24T14:44:52.769+00:00"
}