CVE-2022-49582
- Source
- https://cve.org/CVERecord?id=CVE-2022-49582
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49582.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49582
- Downstream
- Published
- 2025-02-26T02:23:19Z
- Modified
- 2026-08-12T03:51:40Z
- 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
- net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering
The "ds" iterator variable used in dsa_port_reset_vlan_filtering() -> dsa_switch_for_each_port() overwrites the "dp" received as argument, which is later used to call dsa_port_vlan_filtering() proper.
As a result, switches which do enter that code path (the ones with vlan_filtering_is_global=true) will dereference an invalid dp in dsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge.
Use a dedicated "other_dp" iterator variable to avoid this from happening.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49582.json" }- References
-
- https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1
- https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49582.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49582
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git