PT-2025-14328 · Linux+7 · Linux Kernel+7
Published
2025-02-21
·
Updated
2026-05-26
·
CVE-2025-21947
CVSS v3.1
8.1
High
| Vector | AV:N/AC:H/PR:N/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
The issue is related to a type confusion vulnerability via a race condition when using
ipc msg send request in the ksmbd component. This occurs because req->handle is allocated using ksmbd acquire id(&ipc ida), which is based on ida alloc. The req->handle from ksmbd ipc login request and FSCTL PIPE TRANSCEIVE ioctl can be the same, leading to type confusion between messages. As a result, this can cause access to unexpected parts of memory after an incorrect delivery. The ksmbd check does verify the type of ipc response but fails to continue checking the next ipc response.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu
Ksmbd