Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.1.131 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1e8833c03a38e1d5d5df6484e3f670a2fd38fb76Patch
- https://git.kernel.org/stable/c/3cb2b2e41541fe6f9cc55ca22d4c0bd260498aeaPatch
- https://git.kernel.org/stable/c/6321bbda4244b93802d61cfe0887883aae322f4bPatch
- https://git.kernel.org/stable/c/76861630b29e51373e73e7b00ad0d467b6941162Patch
- https://git.kernel.org/stable/c/e2ff19f0b7a30e03516e6eb73b948e27a55bc9d2Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
FAQ
What is CVE-2025-21947?
CVE-2025-21947 is a vulnerability with a CVSS score of 8.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using ksmbd_acquire_id(&ipc_...
How severe is CVE-2025-21947?
CVE-2025-21947 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21947?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.