CVE-2024-38548 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference

In cdns_mhdp_atomic_enable() the return value of drm_mode_duplicate() is assigned to mhdp_state->current_mode and there is a dereference of it in drm_mode_set_name() which will lead to a NULL pointer dereference on failure of drm_mode_duplicate().

Fix this bug add a check of mhdp_state->current_mode.

Reference

https://git.kernel.org/stable/c/85d1a27402f81f2e04b0e67d20f749c2a14edbb3 https://git.kernel.org/stable/c/89788cd9824c28ffcdea40232c458233353d1896 https://git.kernel.org/stable/c/ca53b7efd4ba6ae92fd2b3085cb099c745e96965 https://git.kernel.org/stable/c/dcf53e6103b26e7458be71491d0641f49fbd5840 https://git.kernel.org/stable/c/32fb2ef124c3301656ac6c789a2ef35ef69a66da https://git.kernel.org/stable/c/47889711da20be9b43e1e136e5cb68df37cbcc79 https://git.kernel.org/stable/c/935a92a1c400285545198ca2800a4c6c519c650a