CVE-2026-31639 (GCVE-0-2026-31639)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-04-24 14:44
VLAI?
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 $
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f3441d4125fc98995858550a5521b8d7daf0504a , < f1a7a3ab0f35f83cf11bba906b9e948cf3788c28 (git)
Affected: f3441d4125fc98995858550a5521b8d7daf0504a , < e6b7943c5dc875647499da09bf4d50a8557ab0c3 (git)
Affected: f3441d4125fc98995858550a5521b8d7daf0504a , < 2e6ef713b1598f6acd7f302fa6b12b6731c89914 (git)
Affected: f3441d4125fc98995858550a5521b8d7daf0504a , < 978108902ee4ef2b348ff7ec36ad014dc5bc6dc6 (git)
Affected: f3441d4125fc98995858550a5521b8d7daf0504a , < d666540d217e8d420544ebdfbadeedd623562733 (git)
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    Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.135 , ≤ 6.6.* (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "net/rxrpc/call_object.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix key reference count leak from call-\u003ekey\n\nWhen creating a client call in rxrpc_alloc_client_call(), the code obtains\na reference to the key.  This is never cleaned up and gets leaked when the\ncall is destroyed.\n\nFix this by freeing call-\u003ekey in rxrpc_destroy_call().\n\nBefore the patch, it shows the key reference counter elevated:\n\n$ cat /proc/keys | grep afs@54321\n1bffe9cd I--Q--i 8053480 4169w 3b010000  1000  1000 rxrpc     afs@54321: ka\n$\n\nAfter the patch, the invalidated key is removed when the code exits:\n\n$ cat /proc/keys | grep afs@54321\n$"
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        "dateUpdated": "2026-04-24T14:44:52.769Z",
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    "cveId": "CVE-2026-31639",
    "datePublished": "2026-04-24T14:44:52.769Z",
    "dateReserved": "2026-03-09T15:48:24.125Z",
    "dateUpdated": "2026-04-24T14:44:52.769Z",
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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