CVE-2026-74475
Description
In the Linux kernel, the following vulnerability has been resolved: vxlan: use neigh_ha_snapshot() in route_shortcircuit() The neighbour hardware address n->ha can be updated asynchronously by the neighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without holding the seqlock loop can lead to torn reads or reading a partially updated MAC address. Use neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under read_seqbegin()/read_seqretry() lock protection before using it. Note that arp_reduce() and neigh_reduce() seem to have the same issue left for future patches.
How to fix
- Linux Linux32a9590a8d30426e3db63e6b20893e47e02576c0, d0993fc053f29e15cc7c9fe2029df3882a2ab5ab, 87210054bad82bbae6f483a742dc45722fb47a6b, d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0, ec341bb76d77b4c2948764375ee6bfeef4bb41c3, ff89415d34c3ab9f5312316423122e664ed3524f, 05f2987f73daa05333fd713d05546142f9f7c5f0, 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | e4f67addf158f98f8197e08974966b18480dc751 ≤ v < 32a9590a8d30426e3db63e6b20893e47e02576c0, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < d0993fc053f29e15cc7c9fe2029df3882a2ab5ab, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < 87210054bad82bbae6f483a742dc45722fb47a6b, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < ec341bb76d77b4c2948764375ee6bfeef4bb41c3, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < ff89415d34c3ab9f5312316423122e664ed3524f, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < 05f2987f73daa05333fd713d05546142f9f7c5f0, e4f67addf158f98f8197e08974966b18480dc751 ≤ v < 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d, 3.8 | 32a9590a8d30426e3db63e6b20893e47e02576c0, d0993fc053f29e15cc7c9fe2029df3882a2ab5ab, 87210054bad82bbae6f483a742dc45722fb47a6b, d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0, ec341bb76d77b4c2948764375ee6bfeef4bb41c3, ff89415d34c3ab9f5312316423122e664ed3524f, 05f2987f73daa05333fd713d05546142f9f7c5f0, 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.