Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.532.62

high Tenable Cloud Security Plugin ID 468882

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: NFSv4: include MAY_WRITE in open
 permission mask for O_TRUNC POSIX requires write permission to truncate a file, so an open() that
 specifies O_TRUNC must be authorized for write access regardless of the O_ACCMODE access mode.
 nfs_open_permission_mask() builds the access mask passed to nfs_may_open(), which is the local
 authorization gate for OPENs the client serves itself from a cached write delegation via the
 can_open_delegated() path in nfs4_try_open_cached(). The mask is derived from O_ACCMODE alone, so an
 open(O_RDONLY | O_TRUNC) against a file the caller cannot write requests only MAY_READ and passes the
 local check. The OPEN is then satisfied locally and the truncation is issued to the server as a
 SETATTR(size=0) over the delegation stateid, which the server accepts under standard write-delegation
 semantics. POSIX requires that this open fail with EACCES. Include MAY_WRITE in the mask whenever O_TRUNC
 is set so the local check matches the access the server would have enforced. (CVE-2026-64298)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.62 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-125.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 468882

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: Medium

Score: 4.3

Percentile: 53.6

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-64298

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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: 7/23/2026

Reference Information

CVE: CVE-2026-64298