Detections
Analytics

Echo: linux: security update to 6.1.180-1

critical Tenable Self-Hosted Container Security Plugin ID 455162

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease
 failure nfs4_alloc_stid() publishes the new stid into cl->cl_stateids via idr_alloc_cyclic() under cl_lock
 before returning to nfsd4_alloc_layout_stateid(). When nfsd4_layout_setlease() then fails, the error path
 frees the layout stateid directly with kmem_cache_free() without ever calling idr_remove(), leaving the
 IDR slot pointing at freed slab memory. Any subsequent IDR walker (states_show, client teardown)
 dereferences the dangling pointer. The correct teardown for an IDR-published stid is nfs4_put_stid(),
 which removes the IDR slot under cl_lock, dispatches sc_free (nfsd4_free_layout_stateid) to release
 ls->ls_file via nfsd4_close_layout(), and drops the nfs4_file reference in its tail. A second issue blocks
 that switch: nfsd4_free_layout_stateid() unconditionally inspects ls->ls_fence_work via
 delayed_work_pending() under ls_lock, but INIT_DELAYED_WORK(&ls->ls_fence_work, ...) currently runs only
 after the setlease call. On the setlease-failure path the destructor would touch an uninitialized
 delayed_work. nfsd4_alloc_layout_stateid() nfs4_alloc_stid() /* idr_alloc_cyclic under cl_lock */
 nfsd4_layout_setlease() /* fails */ nfs4_put_stid() nfsd4_free_layout_stateid()
 delayed_work_pending(&ls->ls_fence_work) /* needs INIT */ nfsd4_close_layout() /*
 nfsd_file_put(ls->ls_file) */ put_nfs4_file() Fix by hoisting the ls_fenced / ls_fence_delay /
 INIT_DELAYED_WORK initialization above the nfsd4_layout_setlease() call, and replace the manual
 nfsd_file_put + put_nfs4_file + kmem_cache_free cleanup with a single nfs4_put_stid(stp). (CVE-2026-53399)

Solution

Update the linux library and its related packages to version 6.1.180-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-53399

Plugin Details

Severity: Critical

ID: 455162

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.37

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-53399

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/19/2026

Vulnerability Publication Date: 7/19/2026

Reference Information

CVE: CVE-2026-53399