SB2026062671 - Out-of-bounds read in Linux kernel core seq
Published: June 26, 2026
Security Bulletin ID
SB2026062671
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-53241)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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
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.
Remediation
Install update from vendor's website.