CVE-2022-47939: Linux Kernel

Critical severity, CVSS 9.8. EPSS: 47.4% chance of exploitation in the next 30 days.

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2_TREE_DISCONNECT.

Affected products

• Linux Linux Kernel: from 5.15, before 5.15.61 (fixed in 5.15.61); from 5.16, before 5.18.18 (fixed in 5.18.18); from 5.19, before 5.19.2 (fixed in 5.19.2)

Published 2022-12-23. Last modified 2026-06-17.