VDB
DEBIAN-CVE-2025-39838
DEBIAN-CVE-2025-39838
PUBLISHED
CVSS 5.5 MEDIUM
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
Risk Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | linux | 6.1.123-1, 6.1.38-2, 6.1.112-1 |
| Debian:13 | linux | 6.12.41-1, 0, 6.12.38-1 |
| Debian:11 | linux-6.1 | 0, 6.1.106-3~deb11u1, 6.1.106-3~deb11u2 |
| Debian:14 | linux | 6.12.74-2, 6.12.74-1, 6.12.73-1 |
Timeline
- Sep 19, 2025 CVE Published
- Apr 28, 2026 CVE Updated