CVEvulnerability

CVE-2026-43272

5.5 MEDIUM Published 2026-05-06 Modified 2026-10-21 Official page ↗
Status
Modified
Published
2026-05-06
Last modified
2026-10-21
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix possible dereference of uninitialized pointer There is a pointer head_page in rb_meta_validate_events() which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure during reader page validation. In this case the control is passed to "invalid" label where the pointer is dereferenced in a loop. To fix the issue initialize orig_head and head_page before calling rb_validate_buffer. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected configurations

• linux linux kernel (>= 6.12 < 6.18.16) • linux linux kernel (>= 6.19 < 6.19.6)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References