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Medium severity5.5NVD Advisory· Published Feb 26, 2025· Updated Jun 17, 2026

CVE-2022-49582

CVE-2022-49582

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

11
  • Linux/Kernel10 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.16,<5.18.15
    • cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 5.16
  • osv-coords
    pkg:linux/kernel
    Range: >= 5.16.0, < 5.18.15

Patches

Vulnerability mechanics

References

2

News mentions

0

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