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
Metrics
Affected Vendors & Products
References
History
Fri, 23 Jan 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Debian
Debian debian Linux |
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| Weaknesses | CWE-476 | |
| CPEs | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* |
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| Vendors & Products |
Debian
Debian debian Linux |
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| Metrics |
cvssV3_1
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cvssV3_1
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Fri, 02 Jan 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| References |
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Fri, 02 Jan 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Mon, 03 Nov 2025 18:30:00 +0000
| Type | Values Removed | Values Added |
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| References |
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Mon, 22 Sep 2025 10:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Linux
Linux linux Kernel |
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| Vendors & Products |
Linux
Linux linux Kernel |
Sat, 20 Sep 2025 00:15:00 +0000
| Type | Values Removed | Values Added |
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| References |
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| Metrics |
threat_severity
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cvssV3_1
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Fri, 19 Sep 2025 15:30:00 +0000
| Type | Values Removed | Values Added |
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| 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 | |
| Title | cifs: prevent NULL pointer dereference in UTF16 conversion | |
| References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-09-19T15:26:13.506Z
Updated: 2026-01-02T15:32:37.346Z
Reserved: 2025-04-16T07:20:57.141Z
Link: CVE-2025-39838
No data.
Status : Analyzed
Published: 2025-09-19T16:15:42.457
Modified: 2026-01-23T02:34:16.110
Link: CVE-2025-39838