CVEvulnerability
CVE-2025-38724
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-09-04
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
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().
Affected configurations
• linux linux kernel (>= 3.17 < 5.4.297)
• linux linux kernel (>= 5.5 < 5.10.241)
• linux linux kernel (>= 5.11 < 5.15.190)
• linux linux kernel (>= 5.16 < 6.1.149)
• linux linux kernel (>= 6.2 < 6.6.103)
• linux linux kernel (>= 6.7 < 6.12.43)
• linux linux kernel (>= 6.13 < 6.15.11)
• linux linux kernel (>= 6.16 < 6.16.2)
• debian debian linux 11.0
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/22f45cedf281e6171817c8a3432c44d788c550e1 Patch
- https://git.kernel.org/stable/c/36e83eda90e0e4ac52f259f775b40b2841f8a0a3 Patch
- https://git.kernel.org/stable/c/3f252a73e81aa01660cb426735eab932e6182e8d Patch
- https://git.kernel.org/stable/c/571a5e46c71490285d2d8c06f6b5a7cbf6c7edd1 Patch
- https://git.kernel.org/stable/c/74ad36ed60df561a303a19ecef400c7096b20306 Patch
- https://git.kernel.org/stable/c/908e4ead7f757504d8b345452730636e298cbf68 Patch
- https://git.kernel.org/stable/c/d35ac850410966010e92f401f4e21868a9ea4d8b Patch
- https://git.kernel.org/stable/c/d71abd1ae4e0413707cd42b10c24a11d1aa71772 Patch
- https://git.kernel.org/stable/c/f3aac6cf390d8b80e1d82975faf4ac61175519c0 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html cert-portal.siemens.com
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html cert-portal.siemens.com