NFSD: Handle layout stid in nfsd4_drop_revoked_stid()
nfsd4_drop_revoked_stid() has no SC_TYPE_LAYOUT case, so when a
client sends FREE_STATEID for an admin-revoked layout stid, the
default branch releases cl_lock and returns without unhashing or
releasing the stid. The stid remains in the IDR and on the
per-client list until the client is destroyed.
Remove the layout stid from the per-client list and call
nfs4_put_stid() to drop the creation reference. When the
refcount reaches zero, nfsd4_free_layout_stateid() handles the
remaining cleanup: cancelling the fence worker, removing from
the per-file list, and freeing the slab object.
| Source | ID | Title |
|---|---|---|
Ubuntu USN |
USN-8887-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8888-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-8889-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-8887-2 | Linux kernel (AWS) vulnerabilities |
Ubuntu USN |
USN-8888-2 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-8887-3 | Linux kernel vulnerabilities |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Sat, 17 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Sat, 22 Aug 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 |
Fri, 21 Aug 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-772 | |
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Mon, 17 Aug 2026 06:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
Sat, 15 Aug 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 |
Sat, 15 Aug 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: NFSD: Handle layout stid in nfsd4_drop_revoked_stid() nfsd4_drop_revoked_stid() has no SC_TYPE_LAYOUT case, so when a client sends FREE_STATEID for an admin-revoked layout stid, the default branch releases cl_lock and returns without unhashing or releasing the stid. The stid remains in the IDR and on the per-client list until the client is destroyed. Remove the layout stid from the per-client list and call nfs4_put_stid() to drop the creation reference. When the refcount reaches zero, nfsd4_free_layout_stateid() handles the remaining cleanup: cancelling the fence worker, removing from the per-file list, and freeing the slab object. | |
| Title | NFSD: Handle layout stid in nfsd4_drop_revoked_stid() | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-10-16T18:55:32.624Z
Reserved: 2026-08-15T05:44:03.883Z
Link: CVE-2026-74316
Updated: 2026-10-16T18:53:14.583Z
Status : Received
Published: 2026-08-15T06:22:31.890
Modified: 2026-10-16T19:17:38.987
Link: CVE-2026-74316
OpenCVE Enrichment
Updated: 2026-08-22T02:45:03Z
Ubuntu USN