CVE-2024-46827: wifi: ath12k: fix firmware crash due to invalid peer nss
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix firmware crash due to invalid peer nss
Currently, if the access point receives an association request containing an Extended HE Capabilities Information Element with an invalid MCS-NSS, it triggers a firmware crash.
This issue arises when EHT-PHY capabilities shows support for a bandwidth and MCS-NSS set for that particular bandwidth is filled by zeros and due to this, driver obtains peernss as 0 and sending this value to firmware causes crash.
Address this issue by implementing a validation step for the peernss value before passing it to the firmware. If the value is greater than zero, proceed with forwarding it to the firmware. However, if the value is invalid, reject the association request to prevent potential firmware crashes.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPLSILICONZ-1
Other sources
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— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-46827?
CVE-2024-46827 has a medium severity rating, indicating that it poses a moderate risk to systems.
How do I fix CVE-2024-46827?
To fix CVE-2024-46827, update to the latest patched versions of the Linux kernel as specified in the advisory.
Which versions of the Linux kernel are affected by CVE-2024-46827?
CVE-2024-46827 affects multiple versions, specifically versions up to 6.6.50 of the Linux kernel.
What type of vulnerability is CVE-2024-46827?
CVE-2024-46827 is a firmware crash vulnerability related to invalid peer NSS in the ath12k wireless drivers.
Is CVE-2024-46827 specific to certain distributions of Linux?
Yes, CVE-2024-46827 specifically impacts distributions such as Debian that utilize vulnerable Linux kernel versions.