CVE-2026-98702wifi: mac80211: reject invalid 320 MHz CSA bandwidth
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 21c3f8f95554feff9bed15703e89adbe582e0383 – < cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16
- affected 21c3f8f95554feff9bed15703e89adbe582e0383 – < 1892e71aa2e5ee667d87c6e49e3661f5e290303b
- affected 21c3f8f95554feff9bed15703e89adbe582e0383 – < 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c
- affected 21c3f8f95554feff9bed15703e89adbe582e0383 – < 56e236759f0a8dc910c2ae7cd3c161f298ee5794
- affected 6.9
- unaffected < 6.9
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16 (opens in a new tab)
- https://git.kernel.org/stable/c/1892e71aa2e5ee667d87c6e49e3661f5e290303b (opens in a new tab)
- https://git.kernel.org/stable/c/79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c (opens in a new tab)
- https://git.kernel.org/stable/c/56e236759f0a8dc910c2ae7cd3c161f298ee5794 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103956 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98702)Record last updated .