What is CVE-2023-54091?

CVE-2023-54091 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 2.6.35 onward and patched in 4.14.322, 4.19.291, 5.4.251 and others. CVE-2023-54091 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54091?

CVE-2023-54091 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54091?

Yes, CVE-2023-54091 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.251 and others. If you are running Linux kernel 2.6.35 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54091 actively exploited?

CVE-2023-54091 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54091

In the Linux kernel, the following vulnerability has been resolved: drm/client: Fix memory leak in drm_client_target_cloned dmt_mode is allocated and never freed in this function. It was found with the ast driver, but most drivers using generic fbdev setup are probably affected. This fixes the following kmemleak report: backtrace: [<00000000b391296d>] drm_mode_duplicate+0x45/0x220 [drm] [<00000000e45bb5b3>] drm_client_target_cloned.constprop.0+0x27b/0x480 [drm] [<00000000ed2d3a37>] drm_client_modeset_probe+0x6bd/0xf50 [drm] [<0000000010e5cc9d>] __drm_fb_helper_initial_config_and_unlock+0xb4/0x2c0 [drm_kms_helper] [<00000000909f82ca>] drm_fbdev_client_hotplug+0x2bc/0x4d0 [drm_kms_helper] [<00000000063a69aa>] drm_client_register+0x169/0x240 [drm] [<00000000a8c61525>] ast_pci_probe+0x142/0x190 [ast] [<00000000987f19bb>] local_pci_probe+0xdc/0x180 [<000000004fca231b>] work_for_cpu_fn+0x4e/0xa0 [<0000000000b85301>] process_one_work+0x8b7/0x1540 [<000000003375b17c>] worker_thread+0x70a/0xed0 [<00000000b0d43cd9>] kthread+0x29f/0x340 [<000000008d770833>] ret_from_fork+0x1f/0x30 unreferenced object 0xff11000333089a00 (size 128):

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 2.6.35 and later are affected. Fixed in 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.123, 6.1.42, 6.4.7, 6.5 and their respective stable series.

Affected from

≥ 2.6.35

Fixed in

✓ 4.14.322 4.14.x ✓ 4.19.291 4.19.x ✓ 5.4.251 5.4.x ✓ 5.10.188 5.10.x ✓ 5.15.123 5.15.x ✓ 6.1.42 6.1.x ✓ 6.4.7 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-54091 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/105275879a80503686a8108af2f5c579a1c5aef4
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4b596a6e2d2e0f9c14e4122506dd715f43fcd727
Patch
Kernel patch commit
https://git.kernel.org/stable/c/52daf6ba2e0d201640cb1ce42049c5c4426b4d6e
Patch

8 patch commits total View all on NVD

Frequently asked questions

What is CVE-2023-54091?

CVE-2023-54091 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.35 onward and has been patched in 4.14.322, 4.19.291, 5.4.251 and others. CVE-2023-54091 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54091?

Yes — CVE-2023-54091 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.251 and others. If you are running Linux kernel 2.6.35 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54091 actively exploited?

No — CVE-2023-54091 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.