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Chainguard: linux-qemu-melange: security update to 6.18.49-r2

medium Tenable Self-Hosted Container Security Plugin ID 473062

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: wifi: mt76: mt7921/mt7925: fix NULL
 dereference in CSA beacon This patch is based on a BUG as reported by Bongani Hlope at
 https://lore.kernel.org/all/[email protected]/ When a channel-switch
 announcement (CSA) beacon is received, cfg80211 queues a wiphy work item that eventually calls
 mt7921_channel_switch_rx_beacon(). If the station disconnects (or the channel context is otherwise torn
 down) between the time the work is queued and the time it runs, the driver's dev->new_ctx pointer can
 already have been cleared to NULL. mt7921_channel_switch_rx_beacon() then dereferences new_ctx
 unconditionally, triggering a NULL pointer dereference at address 0x0: BUG: kernel NULL pointer
 dereference, address: 0000000000000000 RIP: 0010:mt7921_channel_switch_rx_beacon+0x1f/0x100
 [mt7921_common] The same missing guard exists in mt7925_channel_switch_rx_beacon(), which shares the same
 code pattern introduced by the same commit. Add an early-return NULL check for dev->new_ctx in both
 mt7921_channel_switch_rx_beacon() and mt7925_channel_switch_rx_beacon(). When new_ctx is NULL there is no
 pending channel switch to process, so returning immediately is the correct and safe action. Oops-Analysis:
 http://oops.fenrus.org/reports/lkml/[email protected]/report.html
 (CVE-2026-64325)

Solution

Update the linux-qemu-melange library and its related packages to version 6.18.49-r2 or later.

Plugin Details

Severity: Medium

ID: 473062

Version: Revision 1.1

Type: Local

Published: 10/6/2026

Updated: 10/6/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

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-2026-64325

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: 7/25/2026

Reference Information

CVE: CVE-2026-64325