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):

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00024.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
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Linux Kernel Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/105275879a80503686a8108af2f5c579a1c5aef4 cve-icon cve-icon
https://git.kernel.org/stable/c/4b596a6e2d2e0f9c14e4122506dd715f43fcd727 cve-icon cve-icon
https://git.kernel.org/stable/c/52daf6ba2e0d201640cb1ce42049c5c4426b4d6e cve-icon cve-icon
https://git.kernel.org/stable/c/a4b978249e8fa94956fce8b70a709f7797716f62 cve-icon cve-icon
https://git.kernel.org/stable/c/a85e23a1ef63e45a18f0a30d7816fcb4a865ca95 cve-icon cve-icon
https://git.kernel.org/stable/c/b5359d7a5087ac398fc429da6833133b4784c268 cve-icon cve-icon
https://git.kernel.org/stable/c/c2a88e8bdf5f6239948d75283d0ae7e0c7945b03 cve-icon cve-icon
https://git.kernel.org/stable/c/d3009700f48602b557eade1f22c98b6bc20247e8 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122407-CVE-2023-54091-577a@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54091 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54091 cve-icon
History

Thu, 25 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 24 Dec 2025 13:15:00 +0000

Type Values Removed Values Added
Description 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):
Title drm/client: Fix memory leak in drm_client_target_cloned
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-24T13:06:20.376Z

Reserved: 2025-12-24T13:02:52.516Z

Link: CVE-2023-54091

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-24T13:16:10.970

Modified: 2025-12-24T13:16:10.970

Link: CVE-2023-54091

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2023-54091 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.