#VU70499 Out-of-bounds read in Linux kernel - CVE-2022-3435
Published: December 27, 2022
Vulnerability identifier: #VU70499
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-3435
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the fib_nh_match() function in net/ipv4/fib_semantics.c IPv4 handler. A remote attacker can send specially crafted data to the system, trigger an out-of-bounds read error and read contents of memory on the system.
Remediation
Install updates from vendor's website.
External links
- https://vuldb.com/?id.210357
- https://lore.kernel.org/netdev/20221005181257.8897-1-dsahern@kernel.org/T/#u
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html