CVE-2026-43379

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close() opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is being accessed after rcu_read_unlock() has been called. This creates a race condition where the memory could be freed by a concurrent writer between the unlock and the subsequent pointer dereferences (opinfo->is_lease, etc.), leading to a use-after-free.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*

History

19 May 2026, 19:56

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/960699317d39f46611f4ebeb69edc567c1f4e6b6 - () https://git.kernel.org/stable/c/960699317d39f46611f4ebeb69edc567c1f4e6b6 - Patch
References () https://git.kernel.org/stable/c/b3568347c51c46e2cabc356bc34676df98296619 - () https://git.kernel.org/stable/c/b3568347c51c46e2cabc356bc34676df98296619 - Patch
References () https://git.kernel.org/stable/c/bf4d66d72e4a9e268c1012c331ce9eaedb5e2086 - () https://git.kernel.org/stable/c/bf4d66d72e4a9e268c1012c331ce9eaedb5e2086 - Patch
References () https://git.kernel.org/stable/c/dbbd328cf58261ca239756fe1c0d10c9518d3399 - () https://git.kernel.org/stable/c/dbbd328cf58261ca239756fe1c0d10c9518d3399 - Patch
References () https://git.kernel.org/stable/c/eac3361e3d5dd8067b3258c69615888eb45e9f25 - () https://git.kernel.org/stable/c/eac3361e3d5dd8067b3258c69615888eb45e9f25 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CWE CWE-416

11 May 2026, 08:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.8

08 May 2026, 15:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-05-08 15:16

Updated : 2026-05-19 19:56


NVD link : CVE-2026-43379

Mitre link : CVE-2026-43379

CVE.ORG link : CVE-2026-43379


JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free