CVE-2026-46152

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: drop stray 'static' from fast-RX rx_result

ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but its per-invocation rx_result is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211_rx_mesh_data() and the switch on res.

That can make a packet that was queued or consumed by ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make a packet that should continue return as queued.

Make res an automatic variable so each invocation keeps its own result.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3468e1e0c639032a603450f0830ccabfa76f5806 < 03584528bfffb195e384698af9148b94e42e3f14affected
LinuxLinux3468e1e0c639032a603450f0830ccabfa76f5806 < 1739fc31b4de06c5c78ce0741182770fb079091eaffected
LinuxLinux3468e1e0c639032a603450f0830ccabfa76f5806 < e131562d6f2b958148c35c98831b007f47f0e3d3affected
LinuxLinux3468e1e0c639032a603450f0830ccabfa76f5806 < 3ef44f96ccc3e06e059dec57842e366f0c4b1893affected
LinuxLinux3468e1e0c639032a603450f0830ccabfa76f5806 < 7a5b81e0c87a075afd572f659d8eb68c9c4cd2baaffected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.88 <= 6.12.*unaffected
LinuxLinux6.18.30 <= 6.18.*unaffected
LinuxLinux7.0.7 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

ADP Enrichment

kernel: wifi: mac80211: drop stray ‘static’ from fast-RX rx_result

Additional References

References