CVE-2026-45972: Linux Kernel

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.

Affected products

• Linux Linux Kernel: from 6.1.163, before 6.1.165 (fixed in 6.1.165); from 6.6.124, before 6.6.128 (fixed in 6.6.128); from 6.12.70, before 6.12.75 (fixed in 6.12.75); from 6.18.10, before 6.18.14 (fixed in 6.18.14); from 6.19.1, before 6.19.4 (fixed in 6.19.4); version 6.19 only

Published 2026-05-27. Last modified 2026-07-15.