CVEvulnerability

CVE-2022-3643

6.5 MEDIUM Published 2022-12-07 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-12-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weaknesses
CWE-74

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.

Affected configurations

• linux linux kernel (>= 3.19 < 4.9.336) • linux linux kernel (>= 4.10 < 4.14.302) • linux linux kernel (>= 4.15 < 4.19.269) • linux linux kernel (>= 4.20 < 5.4.227) • linux linux kernel (>= 5.5 < 5.10.159) • linux linux kernel (>= 5.11 < 5.15.83) • linux linux kernel (>= 5.16 < 6.0.13) • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness

References