CVE-2026-98824

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: validate TX status rate metadata

minstrel_ht_tx_status() converts the HT/VHT rate reported in a TX status

into a group and rate index and uses those to index the minstrel_ht rate

tables. The existing validation only checked that an entry was present

and had tries recorded; it did not check that the reported MCS, spatial

stream count and bandwidth are representable by the tables, so malformed

metadata passed to minstrel_ht_get_stats() or

minstrel_ht_ri_get_stats() could be used as an out-of-bounds index.

Validate the rate metadata in the common TX status path instead of only

in minstrel_ht, since the values are used by more than rate control.

The legacy ieee80211_tx_rate array and the rate_info based entries are

sanitized in ieee80211_tx_status_ext() and ieee80211_tx_rate_update()

before any consumer runs: an entry that does not describe a valid rate

for its encoding is dropped. minstrel_ht keeps th

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References