CVE-2024-57844 drm/xe: Fix fault on fd close after unbind
A local attacker can cause a kernel page fault and system crash by closing a file descriptor after unbinding the Intel Xe GPU device.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-57844?
CVE-2024-57844 is a medium-severity vulnerability in Linux kernel, published on 15 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Fix fault on fd close after unbind
If userspace holds an fd open, unbinds the device and then closes it, the driver shouldn't try to access the hardware. Protect it by using drm_dev_enter()/drm_dev_exit(). This fixes the following page fault:
<6> [IGT] xe_wedged: exiting, ret=98 <1> BUG: unable to handle page fault for address: ffffc901bc5e508c <1> #PF: supervisor read access in kernel mode <1> #PF: error_code(0x0000) - not-present page ... <4> xe_lrc_update_timestamp+0x1c/0xd0 [xe] <4> xe_exec_queue_update_run_ticks+0x50/0xb0 [xe] <4> xe_exec_queue_fini+0x16/0xb0 [xe] <4> __guc_exec_queue_fini_async+0xc4/0x190 [xe] <4> guc_exec_queue_fini_async+0xa0/0xe0 [xe] <4> guc_exec_queue_fini+0x23/0x40 [xe] <4> xe_exec_queue_destroy+0xb3/0xf0 [xe] <4> xe_file_close+0xd4/0x1a0 [xe] <4> drm_file_free+0x210/0x280 [drm] <4> drm_close_helper.isra.0+0x6d/0x80 [drm] <4> drm_release_noglobal+0x20/0x90 [drm]
(cherry picked from commit 4ca1fd418338d4d135428a0eb1e16e3b3ce17ee8)
Which versions are affected by CVE-2024-57844?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-57844?
Apply the vendor's patch.
Is CVE-2024-57844 being exploited?
There is no known exploitation of CVE-2024-57844 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-57844, DEBIAN-CVE-2024-57844, GHSA-cx3g-3hc8-q9x4, UBUNTU-CVE-2024-57844.