vulnerability
Ubuntu: (CVE-2022-49931): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 1, 2025 | May 6, 2025 | Jun 10, 2025 |
Description
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.
Solution(s)
References
- CVE-2022-49931
- https://attackerkb.com/topics/CVE-2022-49931
- URL-https://git.kernel.org/linus/1afac08b39d85437187bb2a92d89a741b1078f55
- URL-https://git.kernel.org/stable/c/1afac08b39d85437187bb2a92d89a741b1078f55
- URL-https://git.kernel.org/stable/c/25760a41e3802f54aadcc31385543665ab349b8e
- URL-https://git.kernel.org/stable/c/7c4260f8f188df32414a5ecad63e8b934c2aa3f0
- URL-https://git.kernel.org/stable/c/b8bcff99b07cc175a6ee12a52db51cdd2229586c
- URL-https://git.kernel.org/stable/c/ba95409d6b580501ff6d78efd00064f7df669926
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49931
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