PT-2026-34991 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-04-28 · CVE-2026-31639

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A key reference count leak exists in the rxrpc component. When a client call is created in the rxrpc alloc client call() function, a reference to the key is obtained but not cleaned up, leading to a leak when the call is destroyed.

Recommendations Free the call->key variable in the rxrpc destroy call() function.

Fix

Related Identifiers

CVE-2026-31639

Affected Products

Linux Kernel

References · 16

• https://osv.dev/vulnerability/BELL-CVE-2026-31639 · Vendor Advisory
• https://git.kernel.org/stable/c/978108902ee4ef2b348ff7ec36ad014dc5bc6dc6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31639 · Security Note
• https://git.kernel.org/stable/c/f1a7a3ab0f35f83cf11bba906b9e948cf3788c28 · Patch
• https://git.kernel.org/stable/c/d666540d217e8d420544ebdfbadeedd623562733 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31639 · Security Note
• https://git.kernel.org/stable/c/2e6ef713b1598f6acd7f302fa6b12b6731c89914 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31639 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31639 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31639 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31639 · Vendor Advisory
• https://git.kernel.org/stable/c/e6b7943c5dc875647499da09bf4d50a8557ab0c3 · Patch
• https://twitter.com/VulmonFeeds/status/2047782541428412903 · Twitter Post
• https://twitter.com/CVEnew/status/2047731945002467456 · Twitter Post
• https://docs.bell-sw.com/security/cves/CVE-2026-31639 · Note