CVE-2022-3643

Advisory lineage Upstream: 0 Downstream: 38
Modified
Published: 07 Dec 2022, 00:00
Last modified:03 Aug 2024, 01:14

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.18% LOW
0% probability +0.09%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Dec 2022, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 01:14
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.18%• Percentile: 40%

Techniques & Countermeasures

  • CWE-74•Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

    The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux_kernel

    ≥ 3.19, < 4.9.336 | ≥ 4.10, < 4.14.302 | ≥ 4.15, < 4.19.269 | ≥ 4.20, < 5.4.227 | ≥ 5.5, < 5.10.159 | ≥ 5.11, < 5.15.83 | ≥ 5.16, < 6.0.13

References (5)