CVE-2026-31639

MEDIUM EPSS 2.3%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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 $

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥6.2.1  –  <6.6.135
linuxlinux_kernel*≥6.7  –  <6.12.82
linuxlinux_kernel*≥6.13  –  <6.18.23
linuxlinux_kernel*≥6.19  –  <6.19.13
linuxlinux_kernel6.2any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/2e6ef713b1598f6acd7f302fa6b12b6731c89914
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/978108902ee4ef2b348ff7ec36ad014dc5bc6dc6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d666540d217e8d420544ebdfbadeedd623562733
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6b7943c5dc875647499da09bf4d50a8557ab0c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f1a7a3ab0f35f83cf11bba906b9e948cf3788c28
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2e6ef713b1598f6acd7f302fa6b12b6731c89914
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/978108902ee4ef2b348ff7ec36ad014dc5bc6dc6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d666540d217e8d420544ebdfbadeedd623562733
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6b7943c5dc875647499da09bf4d50a8557ab0c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f1a7a3ab0f35f83cf11bba906b9e948cf3788c28
    Patch