SB20260507135 - Out-of-bounds read in Linux kernel trace
Published: May 7, 2026
Security Bulletin ID
SB20260507135
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-43210)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in rb_read_data_buffer() when validating a possibly broken ring buffer. A local attacker can provide a malformed ring buffer event length to cause a denial of service.
The issue can lead to invalid memory access during boot.
Remediation
Install update from vendor's website.