PT-2025-18431 · Linux+8 · Linux Kernel+8
Published
2025-04-09
·
Updated
2026-04-20
·
CVE-2025-37750
CVSS v3.1
7.8
High
| Vector | AV: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 versions prior to the fixed version
Description
A use-after-free vulnerability has been identified in the Linux kernel's SMB client, specifically in the decryption process with multichannel. This issue arises when multiple cifsd threads access the AEAD TFM simultaneously, leading to a potential crash or code execution. The vulnerability was discovered when running fstest generic/249 with specific settings against Windows Server 2022, resulting in a KASAN splat.
Recommendations
As a temporary workaround, consider disabling the multichannel feature in the SMB client until a patch is available.
Restrict access to the vulnerable SMB client to minimize the risk of exploitation.
Update to a newer version of the Linux kernel that includes the fix for this issue.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Rocky Linux
Suse
Ubuntu