CVE-2026-45895

low Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: May 27, 2026 (44 days ago)
Last Modified: May 27, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel. A local attacker could exploit a livelock condition between the `quotactl` and `freeze_super` operations. This occurs when a filesystem is frozen and the `quotactl_block()` function enters a retry loop, preventing the system from reaching an RCU (Read-Copy Update) quiescent state. This can lead to a system hang of the freezer process and 100% CPU utilization by the quota process, resulting in a Denial of Service (DoS).

CWE

CWE-835

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org