UBUNTU-CVE-2021-28038
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
02 / AFFECTED SOFTWARE
Affected packages
92 explicit affected versions
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
57 explicit affected versions
191 explicit affected versions
64 explicit affected versions
25 explicit affected versions
44 explicit affected versions
17 explicit affected versions
74 explicit affected versions
23 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
27 explicit affected versions
35 explicit affected versions
60 explicit affected versions
26 explicit affected versions
19 explicit affected versions
10 explicit affected versions
12 explicit affected versions
59 explicit affected versions
41 explicit affected versions
1 explicit affected versions
7 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
58 explicit affected versions
1 explicit affected versions
30 explicit affected versions
33 explicit affected versions
10 explicit affected versions
43 explicit affected versions
11 explicit affected versions
94 explicit affected versions
66 explicit affected versions
27 explicit affected versions
2 explicit affected versions
61 explicit affected versions
23 explicit affected versions
1 explicit affected versions
125 explicit affected versions
7 explicit affected versions
20 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
17 explicit affected versions
1 explicit affected versions
18 explicit affected versions
1 explicit affected versions
20 explicit affected versions
8 explicit affected versions
81 explicit affected versions
16 explicit affected versions
44 explicit affected versions
16 explicit affected versions
12 explicit affected versions
38 explicit affected versions
9 explicit affected versions
103 explicit affected versions
17 explicit affected versions
38 explicit affected versions
74 explicit affected versions
51 explicit affected versions
11 explicit affected versions
42 explicit affected versions
16 explicit affected versions
43 explicit affected versions
1 explicit affected versions
89 explicit affected versions
12 explicit affected versions
20 explicit affected versions
4 explicit affected versions
7 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2021/03/05/1
- http://xenbits.xen.org/xsa/advisory-367.html
- https://ubuntu.com/security/CVE-2021-28038
- https://ubuntu.com/security/notices/USN-4904-1
- https://ubuntu.com/security/notices/USN-4911-1
- https://ubuntu.com/security/notices/USN-4945-1
- https://ubuntu.com/security/notices/USN-4945-2
- https://ubuntu.com/security/notices/USN-4946-1
- https://ubuntu.com/security/notices/USN-4984-1
- https://www.cve.org/CVERecord?id=CVE-2021-28038
- https://xenbits.xen.org/xsa/advisory-367.html