CVE-2023-54018: drm/msm/hdmi: Add missing check for alloc_ordered_workqueue

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/hdmi: Add missing check for alloc_ordered_workqueue Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference in `hdmi_hdcp.c` and `hdmi_hpd.c`. Patchwork: https://patchwork.freedesktop.org/patch/517211/

Affected products

Linux kernel: 4.3 — fixed in 6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/1bab31a0969ca4ac90907a5d3b44af104229eafd
https://git.kernel.org/stable/c/392f7eb3946ab3780b931af723033e19f82c9134
https://git.kernel.org/stable/c/9a01ecc312e764ec4527ad49105a3ca799f1860c
https://git.kernel.org/stable/c/ae5ca116a0c0ba9fc4123b1f1ec3c4f4d0d01b3f
https://git.kernel.org/stable/c/afe4cb96153a0d8003e4e4ebd91b5c543e10df84
https://git.kernel.org/stable/c/b479485b24da1d572a0ce875537af31b02d2f915
https://git.kernel.org/stable/c/e55f93d674314f2fb69eba0dc24acfdf72805611
https://git.kernel.org/stable/c/fc34608fa275fe6b3b17e171b63b8ca3aa1cbf09

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