SB2024013009 - Remote code execution in Linux kernel ICMPv6 support

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2023-6200)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition within the ndisc_router_discovery() function when handling ICMPv6 router advertisement packets. A remote attacker on the local network can send specially crafted ICMPv6 router advertisement packets, trigger a use-after-free error and execute arbitrary code on the system.

Remediation

Install update from vendor's website.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2250377
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dade3f6a1e4e
• https://www.zerodayinitiative.com/advisories/ZDI-24-842/