cifs: prevent NULL pointer dereference in UTF16 conversion
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 96% of all CVEs
observed exploitation
nono source reports it
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 · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-032379.htmlhttps://git.kernel.org/stable/c/1f797f062b5cf13a1c2bcc23285361baaa7c9260https://git.kernel.org/stable/c/3c26a8d30ed6b53a52a023ec537dc50a6d34a67ahttps://git.kernel.org/stable/c/70bccd9855dae56942f2b18a08ba137bb54093a0https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html