CVE-2023-54091

Impact

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):

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

References

• NVD record
• CVE.org record
• https://git.kernel.org/stable/c/105275879a80503686a8108af2f5c579a1c5aef4
• https://git.kernel.org/stable/c/4b596a6e2d2e0f9c14e4122506dd715f43fcd727
• https://git.kernel.org/stable/c/52daf6ba2e0d201640cb1ce42049c5c4426b4d6e
• https://git.kernel.org/stable/c/a4b978249e8fa94956fce8b70a709f7797716f62
• https://git.kernel.org/stable/c/a85e23a1ef63e45a18f0a30d7816fcb4a865ca95
• https://git.kernel.org/stable/c/b5359d7a5087ac398fc429da6833133b4784c268
• https://git.kernel.org/stable/c/c2a88e8bdf5f6239948d75283d0ae7e0c7945b03
• https://git.kernel.org/stable/c/d3009700f48602b557eade1f22c98b6bc20247e8