CVE-2026-93194 is a vulnerability in Linux Kernel
Published on September 17, 2026
drm/rockchip: dw_dp: Release core resources
In the Linux kernel, the following vulnerability has been resolved:
drm/rockchip: dw_dp: Release core resources
Core resources such as the DisplayPort AUX channel get initialized and
registered during dw_dp_bind(), but are never unregistered, which may
lead to memory leaks and/or use-after-free:
[ 224.661371] BUG: KASAN: slab-use-after-free in device_is_dependent+0xe0/0x2b0
[ 224.662015] Read of size 8 at addr ffff00011aee8550 by task modprobe/658
[ 224.662612]
[ 224.662752] CPU: 7 UID: 0 PID: 658 Comm: modprobe Not tainted 7.0.0-rc2-next-20260305 #14 PREEMPT
[ 224.662759] Hardware name: Radxa ROCK 5B (DT)
[ 224.662762] Call trace:
[ 224.662764] show_stack+0x20/0x38 (C)
[ 224.662772] dump_stack_lvl+0x6c/0x98
[ 224.662777] print_report+0x160/0x4b8
[ 224.662783] kasan_report+0xb4/0xe0
[ 224.662790] __asan_report_load8_noabort+0x20/0x30
[ 224.662796] device_is_dependent+0xe0/0x2b0
[ 224.662802] device_is_dependent+0x108/0x2b0
[ 224.662808] device_link_add+0x1f8/0x10b0
[ 224.662813] devm_of_phy_get_by_index+0x120/0x200
[ 224.662819] dw_dp_bind+0x34c/0xb10 [dw_dp]
[ 224.662830] dw_dp_rockchip_bind+0x194/0x250 [rockchipdrm]
[ 224.662864] component_bind_all+0x3a8/0x720
[ 224.662869] rockchip_drm_bind+0x120/0x390 [rockchipdrm]
[ 224.662899] try_to_bring_up_aggregate_device+0x76c/0x838
[ 224.662904] component_master_add_with_match+0x1f4/0x230
[ 224.662909] rockchip_drm_platform_probe+0x420/0x538 [rockchipdrm]
[ 224.662939] platform_probe+0xe8/0x168
[ 224.662945] really_probe+0x340/0x828
[ 224.662950] __driver_probe_device+0x2e0/0x350
[ 224.662954] driver_probe_device+0x80/0x140
[ 224.662959] __driver_attach+0x398/0x460
[ 224.662964] bus_for_each_dev+0xe0/0x198
[ 224.662968] driver_attach+0x50/0x68
[ 224.662972] bus_add_driver+0x2a0/0x4c0
[ 224.662977] driver_register+0x294/0x360
[ 224.662982] __platform_driver_register+0x7c/0x98
[ 224.662987] rockchip_drm_init+0xc4/0xff8 [rockchipdrm]
Since a previous commit exported dw_dp_unbind() function in DW DP core
library to take care of the necessary cleanup, use this in the
component's unbind() callback, as well as in its bind() error path.
Products Associated with CVE-2026-93194
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Affected Versions
Linux:- Version d68ba7bac9555d05e2f5b310c898b2a5c7eff174 and below 362e005b816ee8052a195b98d845966689b398a1 is affected.
- Version d68ba7bac9555d05e2f5b310c898b2a5c7eff174 and below 11f07929f454ecc2c5d0da3a4727fd205be43e49 is affected.
- Version d68ba7bac9555d05e2f5b310c898b2a5c7eff174 and below cc6d7aca2f37a1525a94ef97eb3ce361732c876c is affected.
- Version 6.18 is affected.
- Before 6.18 is unaffected.
- Version 6.18.52, <= 6.18.* is unaffected.
- Version 7.2.6, <= 7.2.* is unaffected.
- Version 7.3-rc1, <= * is unaffected.