CVE-2025-68253
kernel: mm: don't spin in add_stack_record when gfp flags don't allow
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 16, 2025
Updated · June 30, 2026
Description
A potential deadlock was found in the Linux kernel's page_owner debugging feature. The add_stack_record_to_list() function can spin indefinitely when called from a nolock allocation context (alloc_pages_nolock), as the GFP flags don't allow blocking operations but the code attempts to spin-wait regardless.
Statement
This affects systems with CONFIG_PAGE_OWNER enabled, which is primarily a kernel debugging feature not typically enabled in production kernels.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')