Описание
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: fix RCU use in TDLS fast-xmit
This looks up the link under RCU protection, but isn't
guaranteed to actually have protection. Fix that.
A flaw was found in the Linux kernel’s mac80211 subsystem, which handles wireless networking. The issue arises from improper handling of Read-Copy-Update (RCU) in the Tunneled Direct Link Setup (TDLS) fast-xmit function. This flaw can result in using unprotected data structures during execution, leading to potential system instability or exploitation.
Отчет
The vulnerability affects certain Linux kernel versions and has been fixed by assuring that the necessary protections are applied during the lookup of wireless links in TDLS.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel | Fix deferred | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Fix deferred |
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Дополнительная информация
Статус:
5.5 Medium
CVSS3
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix RCU use in TDLS fast-xmit This looks up the link under RCU protection, but isn't guaranteed to actually have protection. Fix that.
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix RCU use in TDLS fast-xmit This looks up the link under RCU protection, but isn't guaranteed to actually have protection. Fix that.
In the Linux kernel, the following vulnerability has been resolved: w ...
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix RCU use in TDLS fast-xmit This looks up the link under RCU protection, but isn't guaranteed to actually have protection. Fix that.
Уязвимость функции ieee80211_check_fast_xmit() модуля net/mac80211/tx.c реализации стека mac80211 ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации
5.5 Medium
CVSS3