SB20260928317 - Use-after-free in Linux kernel openvswitch

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-97611)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to execute arbitrary code, disclose sensitive information, or cause a denial of service.

The vulnerability exists due to a use-after-free in the Open vSwitch flow table mask array when processing packets during flow table statistics lookup. A local user can trigger concurrent flow table mask array reallocation and packet processing to execute arbitrary code, disclose sensitive information, or cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/035e9c3722067648a99010711d0ce81f42572ef4
• https://git.kernel.org/stable/c/a0d18d21d48a551f82ee344e50efb8a682161489
• https://git.kernel.org/stable/c/ba4ba11ed6eb8972c69070417fc27b48deb002e8
• https://git.kernel.org/stable/c/cd982e11684def5d4a9fcfd5354de09032828414