CVE-2026-43272
Severity CVSS v4.0:
Pending analysis
Type:
CWE-476
NULL Pointer Dereference
Publication date:
06/05/2026
Last modified:
08/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
ring-buffer: Fix possible dereference of uninitialized pointer<br />
<br />
There is a pointer head_page in rb_meta_validate_events() which is not<br />
initialized at the beginning of a function. This pointer can be dereferenced<br />
if there is a failure during reader page validation. In this case the control<br />
is passed to "invalid" label where the pointer is dereferenced in a loop.<br />
<br />
To fix the issue initialize orig_head and head_page before calling<br />
rb_validate_buffer.<br />
<br />
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.12 (including) | 6.18.16 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.19 (including) | 6.19.6 (excluding) |
To consult the complete list of CPE names with products and versions, see this page