High · published May 1, 2025
In the Linux kernel, the following vulnerability has been resolved:
IB/hfi1: Correctly move list in sc_disable()
Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()")
incorrectly tries to move a list from one list head to another. The
result is a kernel crash.
The crash is triggered when a link goes down and there are waiters for a
send to complete. The following signature is seen:
BUG: kernel NULL pointer dereference, address: 0000000000000030
[...]
Call Trace:
sc_disable+0x1ba/0x240 [hfi1]
pio_freeze+0x3d/0x60 [hfi1]
handle_freeze+0x27/0x1b0 [hfi1]
process_one_work+0x1b0/0x380
? process_one_work+0x380/0x380
worker_thread+0x30/0x360
? process_one_work+0x380/0x380
kthread+0xd7/0x100
? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x1f/0x30
The fix is to use the correct call to move the list.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.4.157, < 5.4.224 | 5.4.224 |
| linux/linux_kernel | ≥ 5.10.77, < 5.10.154 | 5.10.154 |
| linux/linux_kernel | ≥ 5.14.16, < 5.15.78 | 5.15.78 |
| linux/linux_kernel | ≥ 5.16, < 6.0.8 | 6.0.8 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |