Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SETCLIENTID_CONFIRM could race with a confirmed client expiring and fail to get a reference. That could later lead to a UAF. Fix this by getting a reference early in the case where there is an extant confirmed client. If that fails then treat it as if there were no confirmed client found at all. In the case where the unconfirmed client is expiring, just fail and return the result from get_client_locked().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.17, < 5.4.297 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/22f45cedf281e6171817c8a3432c44d788c550e1Patch
- https://git.kernel.org/stable/c/36e83eda90e0e4ac52f259f775b40b2841f8a0a3Patch
- https://git.kernel.org/stable/c/3f252a73e81aa01660cb426735eab932e6182e8dPatch
- https://git.kernel.org/stable/c/571a5e46c71490285d2d8c06f6b5a7cbf6c7edd1Patch
- https://git.kernel.org/stable/c/74ad36ed60df561a303a19ecef400c7096b20306Patch
- https://git.kernel.org/stable/c/908e4ead7f757504d8b345452730636e298cbf68Patch
- https://git.kernel.org/stable/c/d35ac850410966010e92f401f4e21868a9ea4d8bPatch
- https://git.kernel.org/stable/c/d71abd1ae4e0413707cd42b10c24a11d1aa71772Patch
- https://git.kernel.org/stable/c/f3aac6cf390d8b80e1d82975faf4ac61175519c0Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
FAQ
What is CVE-2025-38724?
CVE-2025-38724 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() ...
How severe is CVE-2025-38724?
CVE-2025-38724 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-38724?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.