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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14 Patch
- https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e Patch
- https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893 Patch
- https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba Patch
- https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 2
- CwesCWE-1058 → CWE-362, CWE-1058NVD modified 2026-10-19 20:18
- First seenCVSS 8.8 · linuxNVD modified 2026-10-16 16:17
Affected (CPE criteria) 3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
References 15
- https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14 Patch
- https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e Patch
- https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893 Patch
- https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba Patch
- https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3 Patch
- https://access.redhat.com/errata/RHSA-2026:26427
- https://access.redhat.com/errata/RHSA-2026:26428
- https://access.redhat.com/errata/RHSA-2026:27288
- https://access.redhat.com/errata/RHSA-2026:27789
- https://access.redhat.com/errata/RHSA-2026:36767
- https://access.redhat.com/errata/RHSA-2026:38902
- https://access.redhat.com/errata/RHSA-2026:44694
- https://access.redhat.com/security/cve/CVE-2026-46152
- https://bugzilla.redhat.com/show_bug.cgi?id=2482563
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46152.json