Chainguard: multiple linux-gcp-6.18-bootc packages: security update to 6.18.38-r2

medium Tenable Cloud Security Plugin ID 473076

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: drm/amd/display: Avoid NULL
dereference in dc_dmub_srv error paths In dc_dmub_srv_log_diagnostic_data() and
dc_dmub_srv_enable_dpia_trace(). Both functions check: if (!dc_dmub_srv || !dc_dmub_srv->dmub) and then
call DC_LOG_ERROR() inside that block. DC_LOG_ERROR() uses dc_dmub_srv->ctx internally. So if dc_dmub_srv
is NULL, the logging itself can dereference a NULL pointer and cause a crash. Fix this by splitting the
checks. First check if dc_dmub_srv is NULL and return immediately. Then check dc_dmub_srv->dmub and log
the error only when dc_dmub_srv is valid. Fixes the below: ../display/dc/dc_dmub_srv.c:962
dc_dmub_srv_log_diagnostic_data() error: we previously assumed 'dc_dmub_srv' could be null (see line 961)
../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_enable_dpia_trace() error: we previously assumed
'dc_dmub_srv' could be null (see line 1166) (CVE-2026-53313)

Solution

Update the linux-gcp-6.18-bootc library and its related packages to version 6.18.38-r2 or later.

Plugin Details

Severity: Medium

ID: 473076

Version: Revision 1.2

Type: Local

Family: Chainguard Local Security Checks

Published: 10/6/2026

Updated: 10/8/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

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-2026-53313

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: 6/26/2026

Reference Information

CVE: CVE-2026-53313

Detections

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