Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.299.60

medium Tenable Self-Hosted Container Security Plugin ID 468865

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: reset write verifier on deferred
 writeback errors nfsd_vfs_write() and nfsd_commit() both call filemap_check_wb_err() to detect deferred
 writeback errors, but neither rotates the server's write verifier (nn->writeverf) when this check fails.
 Every other durable-storage-failure path in these functions calls commit_reset_write_verifier() before
 returning an error. The missing rotation means clients holding UNSTABLE write data under the current
 verifier will COMMIT, receive the unchanged verifier back, and conclude their data is durable — silently
 dropping data that failed writeback. This violates the UNSTABLE+COMMIT durability contract (RFC 1813
 §3.3.7, RFC 8881 §18.32). Add commit_reset_write_verifier() calls at both filemap_check_wb_err() error
 sites, matching the pattern used by adjacent error paths in the same functions. The helper already filters
 -EAGAIN and -ESTALE internally, so the calls are unconditionally safe. (CVE-2026-53393)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.60 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-129.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 468865

Version: Revision 1.5

Type: Local

Published: 10/3/2026

Updated: 10/6/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-53393

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-53393