UBUNTU-CVE-2020-24394
In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.
02 / AFFECTED SOFTWARE
Affected packages
42 explicit affected versions
6 explicit affected versions
6 explicit affected versions
47 explicit affected versions
12 explicit affected versions
28 explicit affected versions
2 explicit affected versions
54 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
7 explicit affected versions
5 explicit affected versions
1 explicit affected versions
12 explicit affected versions
16 explicit affected versions
12 explicit affected versions
4 explicit affected versions
10 explicit affected versions
27 explicit affected versions
26 explicit affected versions
1 explicit affected versions
13 explicit affected versions
13 explicit affected versions
10 explicit affected versions
44 explicit affected versions
1 explicit affected versions
14 explicit affected versions
23 explicit affected versions
23 explicit affected versions
7 explicit affected versions
11 explicit affected versions
12 explicit affected versions
47 explicit affected versions
4 explicit affected versions
51 explicit affected versions
1 explicit affected versions
51 explicit affected versions
5 explicit affected versions
60 explicit affected versions
1 explicit affected versions
6 explicit affected versions
2 explicit affected versions
1 explicit affected versions
2 explicit affected versions
1 explicit affected versions
5 explicit affected versions
2 explicit affected versions
29 explicit affected versions
44 explicit affected versions
15 explicit affected versions
26 explicit affected versions
10 explicit affected versions
38 explicit affected versions
9 explicit affected versions
2 explicit affected versions
73 explicit affected versions
37 explicit affected versions
2 explicit affected versions
32 explicit affected versions
1 explicit affected versions
12 explicit affected versions
6 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.
05 / REFERENCES
Further evidence
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22cf8419f1319ff87ec759d0ebdff4cbafaee832
- https://ubuntu.com/security/CVE-2020-24394
- https://ubuntu.com/security/notices/USN-4465-1
- https://ubuntu.com/security/notices/USN-4483-1
- https://ubuntu.com/security/notices/USN-4485-1
- https://www.cve.org/CVERecord?id=CVE-2020-24394