CVE-2025-38724

Advisory lineage Upstream: 0 Downstream: 62
Modified
Published: 04 Sept 2025, 15:33
Last modified:12 May 2026, 12:05

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Sept 2025, 15:33
Published
Vulnerability first disclosed
12 May 2026, 12:05
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 3f252a73e81aa01660cb426735eab932e6182e8d | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < d35ac850410966010e92f401f4e21868a9ea4d8b | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < f3aac6cf390d8b80e1d82975faf4ac61175519c0 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 22f45cedf281e6171817c8a3432c44d788c550e1 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < d71abd1ae4e0413707cd42b10c24a11d1aa71772 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 74ad36ed60df561a303a19ecef400c7096b20306 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 36e83eda90e0e4ac52f259f775b40b2841f8a0a3 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 571a5e46c71490285d2d8c06f6b5a7cbf6c7edd1 | ≥ d20c11d86d8f821a64eac7d6c8f296f06d935f4f, < 908e4ead7f757504d8b345452730636e298cbf68 | 3.17

  • linux•linux_kernel

    ≥ 3.17, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.149 | ≥ 6.2, < 6.6.103 | ≥ 6.7, < 6.12.43 | ≥ 6.13, < 6.15.11 | ≥ 6.16, < 6.16.2

References (13)