Description
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 products
linux: linux kernel
References10
- git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14 Patch
- git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e Patch
- git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893 Patch
- git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba Patch
- git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3 Patch
- access.redhat.com/errata/RHSA-2026:26427
- access.redhat.com/errata/RHSA-2026:26428
- access.redhat.com/errata/RHSA-2026:27288
- access.redhat.com/errata/RHSA-2026:27789
- access.redhat.com/errata/RHSA-2026:36767
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 15 November 2026
- CWE
- CWE-362CWE-1058
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