UBUNTU-CVE-2024-36944
In the Linux kernel, the following vulnerability has been resolved: Reapply "drm/qxl: simplify qxl_fence_wait" This reverts commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea. Stephen Rostedt reports: "I went to run my tests on my VMs and the tests hung on boot up. Unfortunately, the most I ever got out was: [ 93.607888] Testing event system initcall: OK [ 93.667730] Running tests on all trace events: [ 93.669757] Testing all events: OK [ 95.631064] ------------[ cut here ]------------ Timed out after 60 seconds" and further debugging points to a possible circular locking dependency between the console_owner locking and the worker pool locking. Reverting the commit allows Steve's VM to boot to completion again. [ This may obviously result in the "[TTM] Buffer eviction failed" messages again, which was the reason for that original revert. But at this point this seems preferable to a non-booting system... ]
02 / AFFECTED SOFTWARE
Affected packages
35 explicit affected versions
29 explicit affected versions
10 explicit affected versions
10 explicit affected versions
11 explicit affected versions
29 explicit affected versions
1 explicit affected versions
11 explicit affected versions
9 explicit affected versions
2 explicit affected versions
50 explicit affected versions
7 explicit affected versions
26 explicit affected versions
37 explicit affected versions
50 explicit affected versions
1 explicit affected versions
9 explicit affected versions
25 explicit affected versions
10 explicit affected versions
10 explicit affected versions
13 explicit affected versions
13 explicit affected versions
10 explicit affected versions
14 explicit affected versions
37 explicit affected versions
7 explicit affected versions
8 explicit affected versions
4 explicit affected versions
8 explicit affected versions
19 explicit affected versions
23 explicit affected versions
7 explicit affected versions
42 explicit affected versions
10 explicit affected versions
40 explicit affected versions
10 explicit affected versions
33 explicit affected versions
16 explicit affected versions
6 explicit affected versions
13 explicit affected versions
2 explicit affected versions
12 explicit affected versions
38 explicit affected versions
51 explicit affected versions
13 explicit affected versions
53 explicit affected versions
10 explicit affected versions
10 explicit affected versions
39 explicit affected versions
10 explicit affected versions
13 explicit affected versions
42 explicit affected versions
10 explicit affected versions
42 explicit affected versions
3 explicit affected versions
8 explicit affected versions
2 explicit affected versions
8 explicit affected versions
2 explicit affected versions
13 explicit affected versions
42 explicit affected versions
21 explicit affected versions
6 explicit affected versions
13 explicit affected versions
12 explicit affected versions
13 explicit affected versions
7 explicit affected versions
14 explicit affected versions
12 explicit affected versions
26 explicit affected versions
47 explicit affected versions
49 explicit affected versions
41 explicit affected versions
7 explicit affected versions
7 explicit affected versions
23 explicit affected versions
52 explicit affected versions
14 explicit affected versions
3 explicit affected versions
5 explicit affected versions
36 explicit affected versions
9 explicit affected versions
53 explicit affected versions
40 explicit affected versions
3 explicit affected versions
34 explicit affected versions
3 explicit affected versions
26 explicit affected versions
12 explicit affected versions
44 explicit affected versions
48 explicit affected versions
1 explicit affected versions
4 explicit affected versions
4 explicit affected versions
16 explicit affected versions
9 explicit affected versions
12 explicit affected versions
13 explicit affected versions
44 explicit affected versions
7 explicit affected versions
9 explicit affected versions
5 explicit affected versions
13 explicit affected versions
33 explicit affected versions
7 explicit affected versions
10 explicit affected versions
14 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
4 explicit affected versions
11 explicit affected versions
51 explicit affected versions
56 explicit affected versions
35 explicit affected versions
48 explicit affected versions
12 explicit affected versions
13 explicit affected versions
39 explicit affected versions
23 explicit affected versions
6 explicit affected versions
12 explicit affected versions
50 explicit affected versions
12 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: Reapply "drm/qxl: simplify qxl_fence_wait" This reverts commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea. Stephen Rostedt reports: "I went to run my tests on my VMs and the tests hung on boot up. Unfortunately, the most I ever got out was: [ 93.607888] Testing event system initcall: OK [ 93.667730] Running tests on all trace events: [ 93.669757] Testing all events: OK [ 95.631064] ------------[ cut here ]------------ Timed out after 60 seconds" and further debugging points to a possible circular locking dependency between the console_owner locking and the worker pool locking. Reverting the commit allows Steve's VM to boot to completion again. [ This may obviously result in the "[TTM] Buffer eviction failed" messages again, which was the reason for that original revert. But at this point this seems preferable to a non-booting system... ]
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/3628e0383dd349f02f882e612ab6184e4bb3dc10
- https://git.kernel.org/stable/c/148ed8b4d64f94ab079c8f0d88c3f444db97ba97
- https://git.kernel.org/stable/c/3628e0383dd349f02f882e612ab6184e4bb3dc10
- https://git.kernel.org/stable/c/3dfe35d8683daf9ba69278643efbabe40000bbf6
- https://git.kernel.org/stable/c/4a89ac4b0921c4ea21eb1b4cf3a469a91bacfcea
- https://git.kernel.org/stable/c/b548c53bc3ab83dc6fc86c8e840f013b2032267a
- https://ubuntu.com/security/CVE-2024-36944
- https://ubuntu.com/security/notices/USN-6949-1
- https://ubuntu.com/security/notices/USN-6949-2
- https://ubuntu.com/security/notices/USN-6950-1
- https://ubuntu.com/security/notices/USN-6950-2
- https://ubuntu.com/security/notices/USN-6950-3
- https://ubuntu.com/security/notices/USN-6950-4
- https://ubuntu.com/security/notices/USN-6952-1
- https://ubuntu.com/security/notices/USN-6952-2
- https://ubuntu.com/security/notices/USN-6955-1
- https://ubuntu.com/security/notices/USN-6956-1
- https://ubuntu.com/security/notices/USN-6957-1
- https://www.cve.org/CVERecord?id=CVE-2024-36944