vulnerability
Ubuntu: (CVE-2023-53090): linux vulnerability
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 2, 2025 | May 8, 2025 | Jun 12, 2025 |
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: ffffaa53c362be64
localhost kernel: R10: ffffaa53c362bbd8 R11: 0000000000000001 R12: 0000000000000002
localhost kernel: R13: ffff9e7ead15d600 R14: 0000000000000000 R15: ffff9e7ead15d698
localhost kernel: FS: 0000152a3d111700(0000) GS:ffff9e855ee80000(0000) knlGS:0000000000000000
localhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
localhost kernel: CR2: 0000152938000010 CR3: 000000044d7a4000 CR4: 00000000003506e0
localhost kernel: Call Trace:
localhost kernel: _raw_spin_lock_irqsave+0x30/0x40
localhost kernel: remove_wait_queue+0x12/0x50
localhost kernel: kfd_wait_on_events+0x1b6/0x490 [hydcu]
localhost kernel: ? ftrace_graph_caller+0xa0/0xa0
localhost kernel: kfd_ioctl+0x38c/0x4a0 [hydcu]
localhost kernel: ? kfd_ioctl_set_trap_handler+0x70/0x70 [hydcu]
localhost kernel: ? kfd_ioctl_create_queue+0x5a0/0x5a0 [hydcu]
localhost kernel: ? ftrace_graph_caller+0xa0/0xa0
localhost kernel: __x64_sys_ioctl+0x8e/0xd0
localhost kernel: ? syscall_trace_enter.isra.18+0x143/0x1b0
localhost kernel: do_syscall_64+0x33/0x80
localhost kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
localhost kernel: RIP: 0033:0x152a4dff68d7
Allocate the structure with kcalloc, and remove redundant 0-initialization
and a redundant loop condition check.
Solution(s)
References
- CVE-2023-53090
- https://attackerkb.com/topics/CVE-2023-53090
- URL-https://git.kernel.org/linus/4fc8fff378b2f2039f2a666d9f8c570f4e58352c
- URL-https://git.kernel.org/stable/c/2fece63b55c5d74cd6f5de51159e2cde37e10555
- URL-https://git.kernel.org/stable/c/4fc8fff378b2f2039f2a666d9f8c570f4e58352c
- URL-https://git.kernel.org/stable/c/5a3fb3b745af0ce46ec2e0c8e507bae45b937334
- URL-https://git.kernel.org/stable/c/61f306f8df0d5559659c5578cf6d95236bcdcb25
- URL-https://git.kernel.org/stable/c/6936525142a015e854d0a23e9ad9ea0a28b3843d
- URL-https://git.kernel.org/stable/c/bbf5eada4334a96e3a204b2307ff5b14dc380b0b
- URL-https://git.kernel.org/stable/c/d9923e7214a870b312bf61f6a89c7554d0966985
- URL-https://www.cve.org/CVERecord?id=CVE-2023-53090

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