PT-2025-30851 · Linux+5 · Linux Kernel+5

Published

2025-01-01

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Updated

2026-05-26

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CVE-2025-38437

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A use-after-free issue exists in the kernel’s ksmbd module related to oplock/lease break acknowledgements. If the ksmbd iov pin rsp function returns an error, accessing opinfo->state can occur after the memory has been freed. Additionally, opinfo put and ksmbd fd put could be called multiple times.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-65702
BDU:2025-09194
CVE-2025-38437
DLA-4328-1
DSA-5973-1
DSA-5975-1
ECHO-76E8-44D5-373B
MGASA-2025-0218
MGASA-2025-0219
USN-7879-1
USN-7879-2
USN-7879-3
USN-7879-4
USN-7880-1
USN-7934-1
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu