CVE-2023-53090

/// Technical description

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

drm/amdkfd: Fix an illegal memory access

In the kfd_wait_on_events() function, the kfd_event_waiter structure is

allocated by alloc_event_waiters(), but the event field of the waiter

structure is not initialized; When copy_from_user() fails in the

kfd_wait_on_events() function, it will enter exception handling to

release the previously allocated memory of the waiter structure;

Due to the event field of the waiters structure being accessed

in the free_waiters() function, this results in illegal memory access

and system crash, here is the crash log:

localhost kernel: RIP: 0010:native_queued_spin_lock_slowpath+0x185/0x1e0

localhost kernel: RSP: 0018:ffffaa53c362bd60 EFLAGS: 00010082

localhost kernel: RAX: ff3d3d6bff4007cb RBX: 0000000000000282 RCX: 00000000002c0000

localhost kernel: RDX: ffff9e855eeacb80 RSI: 000000000000279c RDI: ffffe7088f6a21d0

localhost kernel: RBP: ffffe7088f6a21d0 R08: 00000000002c0000 R09: ffffa

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References