UBUNTU-CVE-2020-10751
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing.
02 / AFFECTED SOFTWARE
Affected packages
79 explicit affected versions
38 explicit affected versions
6 explicit affected versions
22 explicit affected versions
6 explicit affected versions
191 explicit affected versions
43 explicit affected versions
9 explicit affected versions
24 explicit affected versions
1 explicit affected versions
49 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
7 explicit affected versions
2 explicit affected versions
1 explicit affected versions
8 explicit affected versions
12 explicit affected versions
47 explicit affected versions
17 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
24 explicit affected versions
46 explicit affected versions
23 explicit affected versions
3 explicit affected versions
11 explicit affected versions
8 explicit affected versions
41 explicit affected versions
1 explicit affected versions
9 explicit affected versions
20 explicit affected versions
23 explicit affected versions
5 explicit affected versions
11 explicit affected versions
81 explicit affected versions
8 explicit affected versions
2 explicit affected versions
44 explicit affected versions
48 explicit affected versions
110 explicit affected versions
51 explicit affected versions
2 explicit affected versions
57 explicit affected versions
1 explicit affected versions
2 explicit affected versions
1 explicit affected versions
68 explicit affected versions
26 explicit affected versions
44 explicit affected versions
13 explicit affected versions
26 explicit affected versions
8 explicit affected versions
38 explicit affected versions
7 explicit affected versions
88 explicit affected versions
70 explicit affected versions
23 explicit affected versions
34 explicit affected versions
30 explicit affected versions
12 explicit affected versions
3 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing.
05 / REFERENCES
Further evidence
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10751
- https://git.kernel.org/linus/fb73974172ffaaf57a7c42f35424d9aece1a5af6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb73974172ffaaf57a7c42f35424d9aece1a5af6
- https://lore.kernel.org/selinux/CACT4Y+b8HiV6KFuAPysZD=5hmyO4QisgxCKi4DHU3CfMPSP=yg@mail.gmail.com/
- https://ubuntu.com/security/CVE-2020-10751
- https://ubuntu.com/security/notices/USN-4389-1
- https://ubuntu.com/security/notices/USN-4390-1
- https://ubuntu.com/security/notices/USN-4391-1
- https://ubuntu.com/security/notices/USN-4412-1
- https://ubuntu.com/security/notices/USN-4413-1
- https://www.cve.org/CVERecord?id=CVE-2020-10751
- https://www.openwall.com/lists/oss-security/2020/04/30/5