CVE-2022-3643
- State
- Published
- Severity
- Not scored
- Published
- Dec 7, 2022
- Updated
- Aug 3, 2024
- Reserved
- Oct 21, 2022
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
LinuxLinux |
|
References
- https://xenbits.xenproject.org/xsa/advisory-423.txt
- [oss-security] 20221207 Xen Security Advisory 423 v2 (CVE-2022-3643) - Guests can trigger NIC interface reset/abort/crash via netbackmailing-list
- [debian-lts-announce] 20221222 [SECURITY] [DLA 3244-1] linux-5.10 security updatemailing-list
- [debian-lts-announce] 20221223 [SECURITY] [DLA 3245-1] linux security updatemailing-list
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
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