UBUNTU-CVE-2024-42079
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix NULL pointer dereference in gfs2_log_flush In gfs2_jindex_free(), set sdp->sd_jdesc to NULL under the log flush lock to provide exclusion against gfs2_log_flush(). In gfs2_log_flush(), check if sdp->sd_jdesc is non-NULL before dereferencing it. Otherwise, we could run into a NULL pointer dereference when outstanding glock work races with an unmount (glock_work_func -> run_queue -> do_xmote -> inode_go_sync -> gfs2_log_flush).
02 / AFFECTED SOFTWARE
Affected packages
33 explicit affected versions
8 explicit affected versions
10 explicit affected versions
10 explicit affected versions
10 explicit affected versions
5 explicit affected versions
11 explicit affected versions
39 explicit affected versions
16 explicit affected versions
10 explicit affected versions
13 explicit affected versions
21 explicit affected versions
53 explicit affected versions
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6 explicit affected versions
12 explicit affected versions
55 explicit affected versions
19 explicit affected versions
6 explicit affected versions
63 explicit affected versions
12 explicit affected versions
48 explicit affected versions
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49 explicit affected versions
10 explicit affected versions
6 explicit affected versions
12 explicit affected versions
7 explicit affected versions
54 explicit affected versions
7 explicit affected versions
13 explicit affected versions
9 explicit affected versions
16 explicit affected versions
35 explicit affected versions
15 explicit affected versions
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18 explicit affected versions
16 explicit affected versions
64 explicit affected versions
12 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
14 explicit affected versions
7 explicit affected versions
12 explicit affected versions
46 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
5 explicit affected versions
7 explicit affected versions
14 explicit affected versions
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1 explicit affected versions
37 explicit affected versions
26 explicit affected versions
13 explicit affected versions
10 explicit affected versions
29 explicit affected versions
13 explicit affected versions
60 explicit affected versions
6 explicit affected versions
7 explicit affected versions
57 explicit affected versions
19 explicit affected versions
33 explicit affected versions
23 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
46 explicit affected versions
40 explicit affected versions
56 explicit affected versions
10 explicit affected versions
26 explicit affected versions
14 explicit affected versions
1 explicit affected versions
5 explicit affected versions
15 explicit affected versions
13 explicit affected versions
14 explicit affected versions
16 explicit affected versions
59 explicit affected versions
15 explicit affected versions
12 explicit affected versions
47 explicit affected versions
3 explicit affected versions
2 explicit affected versions
51 explicit affected versions
12 explicit affected versions
26 explicit affected versions
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27 explicit affected versions
31 explicit affected versions
8 explicit affected versions
8 explicit affected versions
20 explicit affected versions
11 explicit affected versions
13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
1 explicit affected versions
45 explicit affected versions
37 explicit affected versions
15 explicit affected versions
14 explicit affected versions
6 explicit affected versions
38 explicit affected versions
49 explicit affected versions
9 explicit affected versions
48 explicit affected versions
11 explicit affected versions
56 explicit affected versions
7 explicit affected versions
29 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
54 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
4 explicit affected versions
11 explicit affected versions
1 explicit affected versions
8 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix NULL pointer dereference in gfs2_log_flush In gfs2_jindex_free(), set sdp->sd_jdesc to NULL under the log flush lock to provide exclusion against gfs2_log_flush(). In gfs2_log_flush(), check if sdp->sd_jdesc is non-NULL before dereferencing it. Otherwise, we could run into a NULL pointer dereference when outstanding glock work races with an unmount (glock_work_func -> run_queue -> do_xmote -> inode_go_sync -> gfs2_log_flush).
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/35264909e9d1973ab9aaa2a1b07cda70f12bb828
- https://git.kernel.org/stable/c/3429ef5f50909cee9e498c50f0c499b9397116ce
- https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828
- https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef
- https://ubuntu.com/security/CVE-2024-42079
- https://ubuntu.com/security/notices/USN-7089-1
- https://ubuntu.com/security/notices/USN-7089-2
- https://ubuntu.com/security/notices/USN-7089-3
- https://ubuntu.com/security/notices/USN-7089-4
- https://ubuntu.com/security/notices/USN-7089-5
- https://ubuntu.com/security/notices/USN-7089-6
- https://ubuntu.com/security/notices/USN-7089-7
- https://ubuntu.com/security/notices/USN-7090-1
- https://ubuntu.com/security/notices/USN-7095-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7166-1
- https://ubuntu.com/security/notices/USN-7166-2
- https://ubuntu.com/security/notices/USN-7166-3
- https://ubuntu.com/security/notices/USN-7166-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://www.cve.org/CVERecord?id=CVE-2024-42079