CVE-2025-39838

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

Score
CVSS 3.1 5.5 Medium
Status
Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-19
Last modified
2026-10-19
Weaknesses
CWE-476

Affected products

References

 
 
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