Out-of-bounds read in Linux kernel - CVE-2026-53241
Published: June 26, 2026
Vulnerability identifier: #VU135501
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53241
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the ALSA sequencer dummy port event forwarding logic when processing UMP events for subscriber delivery. A local user can send a crafted UMP event to disclose sensitive information.
How to mitigate CVE-2026-53241
Install security update from vendor's repository.