UBUNTU-CVE-2022-3643
Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior.
02 / AFFECTED SOFTWARE
Affected packages
8 explicit affected versions
14 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
23 explicit affected versions
9 explicit affected versions
31 explicit affected versions
20 explicit affected versions
9 explicit affected versions
16 explicit affected versions
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17 explicit affected versions
57 explicit affected versions
73 explicit affected versions
44 explicit affected versions
35 explicit affected versions
7 explicit affected versions
107 explicit affected versions
4 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
81 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
15 explicit affected versions
7 explicit affected versions
12 explicit affected versions
8 explicit affected versions
12 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
62 explicit affected versions
21 explicit affected versions
70 explicit affected versions
12 explicit affected versions
59 explicit affected versions
48 explicit affected versions
10 explicit affected versions
147 explicit affected versions
37 explicit affected versions
80 explicit affected versions
10 explicit affected versions
70 explicit affected versions
1 explicit affected versions
6 explicit affected versions
26 explicit affected versions
13 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
87 explicit affected versions
20 explicit affected versions
1 explicit affected versions
19 explicit affected versions
62 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
72 explicit affected versions
11 explicit affected versions
12 explicit affected versions
95 explicit affected versions
7 explicit affected versions
12 explicit affected versions
60 explicit affected versions
2 explicit affected versions
9 explicit affected versions
4 explicit affected versions
17 explicit affected versions
90 explicit affected versions
59 explicit affected versions
26 explicit affected versions
1 explicit affected versions
13 explicit affected versions
16 explicit affected versions
20 explicit affected versions
10 explicit affected versions
1 explicit affected versions
28 explicit affected versions
39 explicit affected versions
48 explicit affected versions
12 explicit affected versions
9 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
53 explicit affected versions
5 explicit affected versions
51 explicit affected versions
1 explicit affected versions
50 explicit affected versions
10 explicit affected versions
13 explicit affected versions
16 explicit affected versions
49 explicit affected versions
12 explicit affected versions
10 explicit affected versions
12 explicit affected versions
46 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
6 explicit affected versions
37 explicit affected versions
38 explicit affected versions
10 explicit affected versions
9 explicit affected versions
10 explicit affected versions
1 explicit affected versions
124 explicit affected versions
18 explicit affected versions
50 explicit affected versions
7 explicit affected versions
59 explicit affected versions
26 explicit affected versions
100 explicit affected versions
79 explicit affected versions
4 explicit affected versions
36 explicit affected versions
15 explicit affected versions
71 explicit affected versions
49 explicit affected versions
43 explicit affected versions
16 explicit affected versions
103 explicit affected versions
122 explicit affected versions
14 explicit affected versions
50 explicit affected versions
4 explicit affected versions
39 explicit affected versions
1 explicit affected versions
25 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/ad7f402ae4f466647c3a669b8a6f3e5d4271c84a
- https://ubuntu.com/security/CVE-2022-3643
- https://ubuntu.com/security/notices/USN-5794-1
- https://ubuntu.com/security/notices/USN-5802-1
- https://ubuntu.com/security/notices/USN-5803-1
- https://ubuntu.com/security/notices/USN-5804-1
- https://ubuntu.com/security/notices/USN-5804-2
- https://ubuntu.com/security/notices/USN-5808-1
- https://ubuntu.com/security/notices/USN-5813-1
- https://ubuntu.com/security/notices/USN-5814-1
- https://ubuntu.com/security/notices/USN-5829-1
- https://ubuntu.com/security/notices/USN-5830-1
- https://ubuntu.com/security/notices/USN-5831-1
- https://ubuntu.com/security/notices/USN-5832-1
- https://ubuntu.com/security/notices/USN-5860-1
- https://ubuntu.com/security/notices/USN-5861-1
- https://ubuntu.com/security/notices/USN-5863-1
- https://ubuntu.com/security/notices/USN-5875-1
- https://ubuntu.com/security/notices/USN-5877-1
- https://ubuntu.com/security/notices/USN-5879-1
- https://ubuntu.com/security/notices/USN-5918-1
- https://www.cve.org/CVERecord?id=CVE-2022-3643
- https://xenbits.xen.org/xsa/advisory-423.html
- https://xenbits.xenproject.org/xsa/advisory-423.txt