Description
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent NULL pointer dereference in UTF16 conversion There can be a NULL pointer dereference bug here. NULL is passed to __cifs_sfu_make_node without checks, which passes it unchecked to cifs_strndup_to_utf16, which in turn passes it to cifs_local_to_utf16_bytes where '*from' is dereferenced, causing a crash. This patch adds a check for NULL 'src' in cifs_strndup_to_utf16 and returns NULL early to prevent dereferencing NULL pointer. Found by Linux Verification Center (linuxtesting.org) with SVACE
Affected products
linux: linux kernel; debian: debian linux
References5
- git.kernel.org/stable/c/1f797f062b5cf13a1c2bcc23285361baaa7c9260 Patch
- git.kernel.org/stable/c/3c26a8d30ed6b53a52a023ec537dc50a6d34a67a Patch
- git.kernel.org/stable/c/70bccd9855dae56942f2b18a08ba137bb54093a0 Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-032379.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 8 November 2026
- CWE
- CWE-476
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