CVE-2023-53276
kernel: Kernel: Denial of Service via ubifs memory leak
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 16, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel, specifically within its ubifs (Unsorted Block Image File System) component. When a temporary file is created on an encrypted directory, the system fails to properly free memory allocated for the filename. A local attacker could exploit this memory leak by repeatedly creating temporary files, which may lead to a denial of service (DoS) due to memory exhaustion, 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-772 · Missing Release of Resource after Effective Lifetime