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.

Impact & exploitability

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14Patch
• https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091ePatch
• https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893Patch
• https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2baPatch
• https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3Patch
• https://access.redhat.com/errata/RHSA-2026:26427
• https://access.redhat.com/errata/RHSA-2026:26428
• https://access.redhat.com/errata/RHSA-2026:27288