A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-3106
• torvalds/linux@1ba5bf9
• https://access.redhat.com/security/cve/CVE-2023-3106
• https://bugzilla.redhat.com/show_bug.cgi?id=2221501