SB2026102427 - Use-after-free in Linux kernel steering hws driver
Published: October 24, 2026
Security Bulletin ID
SB2026102427
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) Use-after-free (CVE-ID: CVE-2026-98895)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [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]
The vulnerability allows a local user to potentially cause a denial of service by triggering a kernel crash.
The vulnerability exists due to a use-after-free in the mlx5 hardware steering table management code when destroying a table with a configured default miss table. A local user can trigger destruction of such a table to leave a stale entry in the miss table's list, potentially causing a kernel crash during subsequent list access.
Remediation
Install update from vendor's website.