REDHAT-BUG-2482563: High severity Linux Linux kernel (mac80211) vulnerability
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: drop stray 'static' from fast-RX rxresult
ieee80211invokefastrx() is documented as safe for parallel RX, but its per-invocation rxresult is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211rxmeshdata() and the switch on res.
That can make a packet that was queued or consumed by ieee80211rxmeshdata() fall through into ieee80211rx8023(), or make a packet that should continue return as queued.
Make res an automatic variable so each invocation keeps its own result.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2482563?
The severity of REDHAT-BUG-2482563 is rated as high, with a score of 7.
How do I fix REDHAT-BUG-2482563?
To fix REDHAT-BUG-2482563, update your Linux kernel to the latest version that addresses this vulnerability.
What are the potential risks of REDHAT-BUG-2482563?
The potential risks of REDHAT-BUG-2482563 include the possibility of data corruption and security breaches due to concurrent access issues.
What software is affected by REDHAT-BUG-2482563?
REDHAT-BUG-2482563 affects the Linux kernel, specifically the mac80211 module.
When was REDHAT-BUG-2482563 published?
REDHAT-BUG-2482563 was published on May 28, 2026.