CVE-2026-98329 is a vulnerability in Linux Kernel
Published on October 6, 2026
wifi: mac80211: don't allow injecting frames wider than the chanctx
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: don't allow injecting frames wider than the chanctx
Frames injected on a monitor interface can carry a radiotap
field requesting a bandwidth, which mac80211 passes down to
the driver regardless of the the actual operational bandwidth.
If the bandwidth requested is too wide, that triggers a warning
in hwsim:
WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw))
Drop such frames entirely instead since they cannot be sent.
Products Associated with CVE-2026-98329
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Affected Versions
Linux:- Version 646e76bb5daf4ca38438c69ffb72cccb605f3466 and below a5c715eda066cba5ce3372759188ba8636dca629 is affected.
- Version 646e76bb5daf4ca38438c69ffb72cccb605f3466 and below 73f48f7e16cadfc74f444ccd10c1d3ae253e2e27 is affected.
- Version 646e76bb5daf4ca38438c69ffb72cccb605f3466 and below c69718519a81e87284494d0c6e6eb7bdd834707a is affected.
- Version 646e76bb5daf4ca38438c69ffb72cccb605f3466 and below e14bf37bb2b3853012ff160131d1c6233f7a9cc9 is affected.
- Version 4.7 is affected.
- Before 4.7 is unaffected.
- Version 6.12.112, <= 6.12.* is unaffected.
- Version 6.18.54, <= 6.18.* is unaffected.
- Version 7.2.8, <= 7.2.* is unaffected.
- Version 7.3-rc4, <= * is unaffected.