Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3468e1e0c639032a603450f0830ccabfa76f5806 before 03584528bfffb195e384698af9148b94e42e3f14; affected 3468e1e0c639032a603450f0830ccabfa76f5806 before 1739fc31b4de06c5c78ce0741182770fb079091e; affected 3468e1e0c639032a603450f0830ccabfa76f5806 before e131562d6f2b958148c35c98831b007f47f0e3d3; affected 3468e1e0c639032a603450f0830ccabfa76f5806 before 3ef44f96ccc3e06e059dec57842e366f0c4b1893; affected 3468e1e0c639032a603450f0830ccabfa76f5806 before 7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.140 through 6.6.*; unaffected 6.12.88 through 6.12.*; unaffected 6.18.30 through 6.18.*; unaffected 7.0.7 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14
- https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e
- https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3
- https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893
- https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba
ADP enrichment
A flaw was found in the Linux kernel's Wi-Fi (mac80211) subsystem. The `ieee80211_invoke_fast_rx()` function uses a static variable for `rx_result`, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly reported. Such issues can result in unexpected network behavior or a denial of service within the wireless communication.
- 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
- https://access.redhat.com/errata/RHSA-2026:44694
- https://access.redhat.com/errata/RHSA-2026:27288
- https://access.redhat.com/errata/RHSA-2026:36767
- https://access.redhat.com/errata/RHSA-2026:38902
- https://access.redhat.com/errata/RHSA-2026:27789
- https://access.redhat.com/errata/RHSA-2026:26427
- https://access.redhat.com/errata/RHSA-2026:26428
No English description supplied.
No references supplied.