CVE-2022-49134
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49134
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49134.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49134
- Downstream
- Related
- Published
- 2025-02-26T07:00:50Z
- Modified
- 2025-08-09T20:01:28Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mlxsw: spectrum: Guard against invalid local ports
When processing events generated by the device's firmware, the driver protects itself from events reported for non-existent local ports, but not for the CPU port (local port 0), which exists, but does not have all the fields as any local port.
This can result in a NULL pointer dereference when trying access 'struct mlxswspport' fields which are not initialized for CPU port.
Commit 63b08b1f6834 ("mlxsw: spectrum: Protect driver from buggy firmware") already handled such issue by bailing early when processing a PUDE event reported for the CPU port.
Generalize the approach by moving the check to a common function and making use of it in all relevant places.
- References