CVE-2023-44466: Linux Kernel

High severity, CVSS 8.8. EPSS: 45.6% chance of exploitation in the next 30 days.

An issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5. There is an integer signedness error, leading to a buffer overflow and remote code execution via HELLO or one of the AUTH frames. This occurs because of an untrusted length taken from a TCP packet in ceph_decode_32.

Affected products

• Linux Linux Kernel: from 5.11, before 5.15.121 (fixed in 5.15.121); from 5.16, before 6.1.40 (fixed in 6.1.40); from 6.2, before 6.4.5 (fixed in 6.4.5)

Published 2023-09-29. Last modified 2026-06-17.