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.
CVSS
8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
from 3468e1e0c639032a603450f0830ccabfa76f5806 before 03584528bfffb195e384698af9148b94e42e3f14; 3468e1e0c639032a603450f0830ccabfa76f5806 builds before 1739fc31b4de06c5c78ce0741182770fb079091e; from 3468e1e0c639032a603450f0830ccabfa76f5806 before e131562d6f2b958148c35c98831b007f47f0e3d3; 3468e1e0c639032a603450f0830ccabfa76f5806 builds before 3ef44f96ccc3e06e059dec57842e366f0c4b1893; 3468e1e0c639032a603450f0830ccabfa76f5806 builds before 7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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