UBUNTU-CVE-2021-28964
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
191 explicit affected versions
65 explicit affected versions
26 explicit affected versions
45 explicit affected versions
18 explicit affected versions
75 explicit affected versions
23 explicit affected versions
72 explicit affected versions
1 explicit affected versions
1 explicit affected versions
18 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
1 explicit affected versions
28 explicit affected versions
36 explicit affected versions
27 explicit affected versions
20 explicit affected versions
10 explicit affected versions
138 explicit affected versions
13 explicit affected versions
71 explicit affected versions
42 explicit affected versions
1 explicit affected versions
10 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
59 explicit affected versions
1 explicit affected versions
31 explicit affected versions
33 explicit affected versions
10 explicit affected versions
44 explicit affected versions
11 explicit affected versions
67 explicit affected versions
28 explicit affected versions
2 explicit affected versions
62 explicit affected versions
24 explicit affected versions
1 explicit affected versions
8 explicit affected versions
21 explicit affected versions
1 explicit affected versions
1 explicit affected versions
24 explicit affected versions
18 explicit affected versions
1 explicit affected versions
19 explicit affected versions
1 explicit affected versions
21 explicit affected versions
8 explicit affected versions
17 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
38 explicit affected versions
9 explicit affected versions
115 explicit affected versions
18 explicit affected versions
50 explicit affected versions
2 explicit affected versions
75 explicit affected versions
52 explicit affected versions
12 explicit affected versions
43 explicit affected versions
17 explicit affected versions
43 explicit affected versions
1 explicit affected versions
93 explicit affected versions
90 explicit affected versions
12 explicit affected versions
21 explicit affected versions
4 explicit affected versions
8 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/dbcc7d57bffc0c8cac9dac11bec548597d59a6a5
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbcc7d57bffc0c8cac9dac11bec548597d59a6a5
- https://ubuntu.com/security/CVE-2021-28964
- https://ubuntu.com/security/notices/USN-4948-1
- https://ubuntu.com/security/notices/USN-4979-1
- https://ubuntu.com/security/notices/USN-4982-1
- https://ubuntu.com/security/notices/USN-4984-1
- https://ubuntu.com/security/notices/USN-5361-1
- https://www.cve.org/CVERecord?id=CVE-2021-28964