{"cve":"CVE-2026-31639","nvd":{"published":"2026-04-24T15:16:43.240","modified":"2026-06-17T10:34:08.627","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix key reference count leak from call->key\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->key 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$","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/2e6ef713b1598f6acd7f302fa6b12b6731c89914","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"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31639","score":0.00122,"percentile":0.01949,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}