UBUNTU-CVE-2024-50280
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
02 / AFFECTED SOFTWARE
Affected packages
16 explicit affected versions
2 explicit affected versions
10 explicit affected versions
16 explicit affected versions
4 explicit affected versions
6 explicit affected versions
11 explicit affected versions
53 explicit affected versions
116 explicit affected versions
67 explicit affected versions
50 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
77 explicit affected versions
21 explicit affected versions
62 explicit affected versions
62 explicit affected versions
91 explicit affected versions
70 explicit affected versions
85 explicit affected versions
57 explicit affected versions
10 explicit affected versions
12 explicit affected versions
19 explicit affected versions
18 explicit affected versions
69 explicit affected versions
7 explicit affected versions
67 explicit affected versions
16 explicit affected versions
13 explicit affected versions
35 explicit affected versions
29 explicit affected versions
27 explicit affected versions
18 explicit affected versions
27 explicit affected versions
118 explicit affected versions
64 explicit affected versions
21 explicit affected versions
120 explicit affected versions
1 explicit affected versions
21 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
26 explicit affected versions
124 explicit affected versions
76 explicit affected versions
22 explicit affected versions
7 explicit affected versions
12 explicit affected versions
111 explicit affected versions
1 explicit affected versions
12 explicit affected versions
14 explicit affected versions
1 explicit affected versions
154 explicit affected versions
7 explicit affected versions
2 explicit affected versions
104 explicit affected versions
12 explicit affected versions
10 explicit affected versions
105 explicit affected versions
12 explicit affected versions
16 explicit affected versions
23 explicit affected versions
13 explicit affected versions
8 explicit affected versions
37 explicit affected versions
1 explicit affected versions
13 explicit affected versions
14 explicit affected versions
10 explicit affected versions
44 explicit affected versions
26 explicit affected versions
13 explicit affected versions
16 explicit affected versions
23 explicit affected versions
29 explicit affected versions
111 explicit affected versions
13 explicit affected versions
74 explicit affected versions
15 explicit affected versions
100 explicit affected versions
69 explicit affected versions
32 explicit affected versions
33 explicit affected versions
98 explicit affected versions
23 explicit affected versions
38 explicit affected versions
10 explicit affected versions
1 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
138 explicit affected versions
54 explicit affected versions
132 explicit affected versions
70 explicit affected versions
26 explicit affected versions
20 explicit affected versions
1 explicit affected versions
46 explicit affected versions
11 explicit affected versions
13 explicit affected versions
21 explicit affected versions
139 explicit affected versions
78 explicit affected versions
16 explicit affected versions
71 explicit affected versions
24 explicit affected versions
116 explicit affected versions
3 explicit affected versions
132 explicit affected versions
17 explicit affected versions
93 explicit affected versions
1 explicit affected versions
2 explicit affected versions
51 explicit affected versions
92 explicit affected versions
7 explicit affected versions
20 explicit affected versions
12 explicit affected versions
59 explicit affected versions
8 explicit affected versions
57 explicit affected versions
27 explicit affected versions
44 explicit affected versions
121 explicit affected versions
13 explicit affected versions
34 explicit affected versions
5 explicit affected versions
8 explicit affected versions
10 explicit affected versions
20 explicit affected versions
110 explicit affected versions
13 explicit affected versions
72 explicit affected versions
7 explicit affected versions
140 explicit affected versions
94 explicit affected versions
10 explicit affected versions
12 explicit affected versions
17 explicit affected versions
108 explicit affected versions
80 explicit affected versions
56 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
25 explicit affected versions
14 explicit affected versions
38 explicit affected versions
167 explicit affected versions
9 explicit affected versions
11 explicit affected versions
15 explicit affected versions
7 explicit affected versions
70 explicit affected versions
7 explicit affected versions
121 explicit affected versions
59 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
68 explicit affected versions
58 explicit affected versions
58 explicit affected versions
13 explicit affected versions
43 explicit affected versions
19 explicit affected versions
77 explicit affected versions
119 explicit affected versions
10 explicit affected versions
8 explicit affected versions
11 explicit affected versions
88 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
1 explicit affected versions
69 explicit affected versions
123 explicit affected versions
14 explicit affected versions
59 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/135496c208ba26fd68cdef10b64ed7a91ac9a7ff
- https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff
- https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e
- https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c
- https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718
- https://ubuntu.com/security/CVE-2024-50280
- https://ubuntu.com/security/notices/USN-7276-1
- https://ubuntu.com/security/notices/USN-7277-1
- https://ubuntu.com/security/notices/USN-7310-1
- https://ubuntu.com/security/notices/USN-7449-1
- https://ubuntu.com/security/notices/USN-7449-2
- https://ubuntu.com/security/notices/USN-7450-1
- https://ubuntu.com/security/notices/USN-7451-1
- https://ubuntu.com/security/notices/USN-7452-1
- https://ubuntu.com/security/notices/USN-7453-1
- https://ubuntu.com/security/notices/USN-7468-1
- https://ubuntu.com/security/notices/USN-7523-1
- https://ubuntu.com/security/notices/USN-7524-1
- https://ubuntu.com/security/notices/USN-7654-1
- https://ubuntu.com/security/notices/USN-7654-2
- https://ubuntu.com/security/notices/USN-7654-3
- https://ubuntu.com/security/notices/USN-7654-4
- https://ubuntu.com/security/notices/USN-7654-5
- https://ubuntu.com/security/notices/USN-7655-1
- https://ubuntu.com/security/notices/USN-7686-1
- https://ubuntu.com/security/notices/USN-7711-1
- https://ubuntu.com/security/notices/USN-7712-1
- https://ubuntu.com/security/notices/USN-7712-2
- https://www.cve.org/CVERecord?id=CVE-2024-50280