PT-2026-34339 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-25 · CVE-2026-31434

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 memory leak occurs in the btrfs component when create space info sub group() allocates elements of space info->sub group[]. While kobject init and add() is called for each element via btrfs sysfs add space info type(), the check removing space info() function fails to call btrfs sysfs remove space info() when freeing these elements. Consequently, kobject put() is not executed, leading to a leak of the associated kobj->name objects.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-31434

ECHO-1353-F2D8-5656

Affected Products

Linux Kernel

References · 16

• https://git.kernel.org/stable/c/a4376d9a5d4c9610e69def3fc0b32c86a7ab7a41 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31434 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31434 · Security Note
• https://git.kernel.org/stable/c/3c645c6f7e5470debbb81666b230056de48f36dc · Patch
• https://git.kernel.org/stable/c/94054ffd311a1f76b7093ba8ebf50bdb0d28337c · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31434 · Vendor Advisory
• https://git.kernel.org/stable/c/3c844d01f9874a43004c82970d8da94f9aba8949 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31434 · Vendor Advisory
• https://git.kernel.org/stable/c/1737ddeafbb1304f41ec2eede4f7366082e7c96a · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31434 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-31434 · Vendor Advisory
• https://git.kernel.org/stable/c/416484f21a9d1280cf6daa7ebc10c79b59c46e48 · Patch
• https://ubuntu.com/security/CVE-2026-31434 · Vendor Advisory
• https://git.kernel.org/linus/a4376d9a5d4c9610e69def3fc0b32c86a7ab7a41 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-31434 · Note