CVE-2023-54091

drm/client: Fix memory leak in drm_client_target_cloned

State: Published
Severity: Not scored
Published: Dec 24, 2025
Updated: May 11, 2026
Reserved: Dec 24, 2025

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):

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before d3009700f48602b557eade1f22c98b6bc20247e8Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before a4b978249e8fa94956fce8b70a709f7797716f62Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 52daf6ba2e0d201640cb1ce42049c5c4426b4d6eAffected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 105275879a80503686a8108af2f5c579a1c5aef4Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before a85e23a1ef63e45a18f0a30d7816fcb4a865ca95Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before b5359d7a5087ac398fc429da6833133b4784c268Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 4b596a6e2d2e0f9c14e4122506dd715f43fcd727Affected 1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before c2a88e8bdf5f6239948d75283d0ae7e0c7945b03Affected
LinuxLinux	2.6.35Affected before 2.6.35Not affected 4.14.322 through 4.14.Not affected 4.19.291 through 4.19.Not affected 5.4.251 through 5.4.Not affected 5.10.188 through 5.10.Not affected 5.15.123 through 5.15.Not affected 6.1.42 through 6.1.Not affected 6.4.7 through 6.4.*Not affected 6.5 and laterNot affected

Product

Versions

LinuxLinux

1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before d3009700f48602b557eade1f22c98b6bc20247e8Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before a4b978249e8fa94956fce8b70a709f7797716f62Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 52daf6ba2e0d201640cb1ce42049c5c4426b4d6eAffected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 105275879a80503686a8108af2f5c579a1c5aef4Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before a85e23a1ef63e45a18f0a30d7816fcb4a865ca95Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before b5359d7a5087ac398fc429da6833133b4784c268Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before 4b596a6e2d2e0f9c14e4122506dd715f43fcd727Affected
1d42bbc8f7f9ce4d852692ef7aa336b133b0830a to before c2a88e8bdf5f6239948d75283d0ae7e0c7945b03Affected

LinuxLinux

2.6.35Affected
before 2.6.35Not affected
4.14.322 through 4.14.*Not affected
4.19.291 through 4.19.*Not affected
5.4.251 through 5.4.*Not affected
5.10.188 through 5.10.*Not affected
5.15.123 through 5.15.*Not affected
6.1.42 through 6.1.*Not affected
6.4.7 through 6.4.*Not affected
6.5 and laterNot affected

References

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