Riskcovery

CVE-2026-98702

wifi: mac80211: reject invalid 320 MHz CSA bandwidth

State
Published
Severity
Not scored
Published
Oct 18, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 21c3f8f95554feff9bed15703e89adbe582e0383 to before cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16Affected
  • 21c3f8f95554feff9bed15703e89adbe582e0383 to before 1892e71aa2e5ee667d87c6e49e3661f5e290303bAffected
  • 21c3f8f95554feff9bed15703e89adbe582e0383 to before 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56cAffected
  • 21c3f8f95554feff9bed15703e89adbe582e0383 to before 56e236759f0a8dc910c2ae7cd3c161f298ee5794Affected
LinuxLinux
  • 6.9Affected
  • before 6.9Not affected
  • 6.12.113 through 6.12.*Not affected
  • 6.18.56 through 6.18.*Not affected
  • 7.2.10 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.