drm/client: Fix memory leak in drm_client_target_cloned
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/105275879a80503686a8108af2f5c579a1c5aef4https://git.kernel.org/stable/c/4b596a6e2d2e0f9c14e4122506dd715f43fcd727https://git.kernel.org/stable/c/52daf6ba2e0d201640cb1ce42049c5c4426b4d6ehttps://git.kernel.org/stable/c/a4b978249e8fa94956fce8b70a709f7797716f62https://git.kernel.org/stable/c/a85e23a1ef63e45a18f0a30d7816fcb4a865ca95https://git.kernel.org/stable/c/b5359d7a5087ac398fc429da6833133b4784c268https://git.kernel.org/stable/c/c2a88e8bdf5f6239948d75283d0ae7e0c7945b03https://git.kernel.org/stable/c/d3009700f48602b557eade1f22c98b6bc20247e8