CVE-2022-3643
Vulnerability from cvelistv5
Published
2022-12-07 00:00
Modified
2024-08-03 01:14
Severity ?
Summary
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.
References
security@xen.orghttp://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
security@xen.orghttp://www.openwall.com/lists/oss-security/2022/12/07/2Mailing List, Third Party Advisory
security@xen.orghttps://lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing List, Third Party Advisory
security@xen.orghttps://lists.debian.org/debian-lts-announce/2022/12/msg00034.htmlMailing List, Third Party Advisory
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-423.txtVendor Advisory
Impacted products
LinuxLinux
Show details on NVD website

To clipboard 

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