SB20260928315 - Use-after-free in Linux kernel netlink
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928315
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-2026-97901)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the generic netlink controller policy dump handling when advancing a pending policy dump. A local user can initiate and advance a policy dump to cause a denial of service.
Exploitation requires the target generic netlink family to be unregistered and its module unloaded while the dump remains pending.
Remediation
Install update from vendor's website.