CVE-2024-49989

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: fix double free issue during amdgpu module unload

Flexible endpoints use DIGs from available inflexible endpoints, so only the encoders of inflexible links need to be freed. Otherwise, a double free issue may occur when unloading the amdgpu module.

[ 279.190523] RIP: 0010:_slabfree+0x152/0x2f0 [ 279.190577] Call Trace: [ 279.190580] <TASK> [ 279.190582] ? showregs+0x69/0x80 [ 279.190590] ? die+0x3b/0x90 [ 279.190595] ? dotrap+0xc8/0xe0 [ 279.190601] ? doerrortrap+0x73/0xa0 [ 279.190605] ? _slabfree+0x152/0x2f0 [ 279.190609] ? excinvalidop+0x56/0x70 [ 279.190616] ? _slabfree+0x152/0x2f0 [ 279.190642] ? asmexcinvalidop+0x1f/0x30 [ 279.190648] ? dcn10linkencoderdestroy+0x19/0x30 [amdgpu] [ 279.191096] ? _slabfree+0x152/0x2f0 [ 279.191102] ? dcn10linkencoderdestroy+0x19/0x30 [amdgpu] [ 279.191469] kfree+0x260/0x2b0 [ 279.191474] dcn10linkencoderdestroy+0x19/0x30 [amdgpu] [ 279.191821] linkdestroy+0xd7/0x130 [amdgpu] [ 279.192248] dcdestruct+0x90/0x270 [amdgpu] [ 279.192666] dcdestroy+0x19/0x40 [amdgpu] [ 279.193020] amdgpudmfini+0x16e/0x200 [amdgpu] [ 279.193432] dmhwfini+0x26/0x40 [amdgpu] [ 279.193795] amdgpudevicefinihw+0x24c/0x400 [amdgpu] [ 279.194108] amdgpudriverunloadkms+0x4f/0x70 [amdgpu] [ 279.194436] amdgpupciremove+0x40/0x80 [amdgpu] [ 279.194632] pcideviceremove+0x3a/0xa0 [ 279.194638] deviceremove+0x40/0x70 [ 279.194642] devicereleasedriverinternal+0x1ad/0x210 [ 279.194647] driverdetach+0x4e/0xa0 [ 279.194650] busremovedriver+0x6f/0xf0 [ 279.194653] driverunregister+0x33/0x60 [ 279.194657] pciunregisterdriver+0x44/0x90 [ 279.194662] amdgpuexit+0x19/0x1f0 [amdgpu] [ 279.194939] _dosysdeletemodule.isra.0+0x198/0x2f0 [ 279.194946] _x64sysdeletemodule+0x16/0x20 [ 279.194950] dosyscall64+0x58/0x120 [ 279.194954] entrySYSCALL64afterhwframe+0x6e/0x76 [ 279.194980] </TASK>