CVE-2026-52936
kernel: crypto: jitterentropy - replace long-held spinlock with mutex
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · July 9, 2026
Description
A flaw was found in the Linux kernel's jitterentropy cryptographic module. A long-held spinlock during entropy collection could cause parallel readers to stall. This issue allows a local attacker to trigger a Denial of Service (DoS) by causing contention for the shared lock, making the system unresponsive.
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-821 · Incorrect Synchronization