CVE-2026-53327
kernel: debugobjects: Do not fill_pool() if pi_blocked_on
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 1, 2026
Updated · July 24, 2026
Description
A flaw was found in the Linux kernel's debugobjects functionality. On systems with Real-Time (RT) enabled kernels, the fill_pool() function can lead to a system assertion if a task is already blocked on a lock, causing corruption of the priority inheritance chain. This issue can result in a Denial of Service (DoS) due to the system asserting.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition