CVE-2023-3106: Kernel: netlink socket crash (null pointer deref) in netlink_dump function

Description

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.

Classification

CVE ID: CVE-2023-3106

Affected Products

Vendor: Red Hat

Product: Red Hat Enterprise Linux 6

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 14.88% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://access.redhat.com/security/cve/CVE-2023-3106
https://bugzilla.redhat.com/show_bug.cgi?id=2221501
https://github.com/torvalds/linux/commit/1ba5bf993c6a3142e18e68ea6452b347f9cb5635

Timeline