CVE-2026-98702None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reject invalid 320 MHz CSA bandwidth The HT/VHT channel definition validator can receive a 320 MHz bandwidth indication from a received CSA frame on a …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: reject invalid 320 MHz CSA bandwidth
The HT/VHT channel definition validator can receive a 320 MHz bandwidth indication from a received CSA frame on a non-6 GHz link. It warns for this unsupported width but continues with an uninitialized vht_operation.chan_width, which is then read by ieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a received frame panic the kernel.
Reject the channel definition before entering the VHT operation conversion. This preserves the existing CSA fallback while avoiding both the warning and the uninitialized read.
Linux >= 21c3f8f95554feff9bed15703e89adbe582e0383 < cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16Linux >= 21c3f8f95554feff9bed15703e89adbe582e0383 < 1892e71aa2e5ee667d87c6e49e3661f5e290303bLinux >= 21c3f8f95554feff9bed15703e89adbe582e0383 < 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56cLinux >= 21c3f8f95554feff9bed15703e89adbe582e0383 < 56e236759f0a8dc910c2ae7cd3c161f298ee5794Linux 6.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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