SB2026091877 - Use-after-free in Linux kernel printk
Published: September 18, 2026
Security Bulletin ID
SB2026091877
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-93134)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to access freed memory.
The vulnerability exists due to use-after-free in console_flush_one_record() when emitting records through legacy printing during a console handover. A local user can trigger legacy record emission during a console handover to access freed memory.
Remediation
Install update from vendor's website.