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 19216.532.3

medium Tenable Cloud Security Plugin ID 469226

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: bpf: Enforce regsafe base id
 consistency for BPF_ADD_CONST scalars When regsafe() compares two scalar registers that both carry
 BPF_ADD_CONST, check_scalar_ids() maps their full compound id (aka base | BPF_ADD_CONST flag) as one idmap
 entry. However, it never verifies that the underlying base ids, that is, with the flag stripped are
 consistent with existing idmap mappings. This allows construction of two verifier states where the old
 state has R3 = R2 + 10 (both sharing base id A) while the current state has R3 = R4 + 10 (base id C,
 unrelated to R2). The idmap creates two independent entries: A->B (for R2) and A|flag->C|flag (for R3),
 without catching that A->C conflicts with A->B. State pruning then incorrectly succeeds. Fix this by
 additionally verifying base ID mapping consistency whenever BPF_ADD_CONST is set: after mapping the
 compound ids, also invoke check_ids() on the base IDs (flag bits stripped). This ensures that if A was
 already mapped to B from comparing the source register, any ADD_CONST derivative must also derive from B,
 not an unrelated C. (CVE-2026-53081)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.3 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 469226

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: 4.9

Percentile: 58.02

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-53081

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.6

Vector: CVSS:3.0/AV:L/AC:H/PR:H/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

Vulnerability Publication Date: 6/22/2026

Reference Information

CVE: CVE-2026-53081