What’s Vulnerable › Vulnerabilities

CVE-2026-98700: wifi: mac80211: set info->band for 802.3 encap offload frames

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: set info->band for 802.3 encap offload frames Unlike the 802.11 TX paths, ieee80211_8023_xmit() does not set info->band from the channel context on non-MLD interfaces. It stays at 0, so ieee80211_get_tx_rates() uses the wrong band for these frames. Set it the same way as ieee80211_build_hdr(): drop the frame if there is no channel context, and leave the band at 0 on MLD interfaces.

Affected products

• Linux: 5.7 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2d9c5525bbc1a548cdc9c4def3cd7fbfc7c66b5b
• https://git.kernel.org/stable/c/3ce62fa18975316547c971cf60c4533077a60c48
• https://git.kernel.org/stable/c/4febc02cd02f021f2b6d0768332be643ef14a12d
• https://git.kernel.org/stable/c/6535f7084d95873785a7a93cdca05e8ee83b5601
• https://git.kernel.org/stable/c/93c1b247224a32f546b616a8fe87b9bab20f0a7f
• https://git.kernel.org/stable/c/9cedbfde1450028f530e9af950f53491fcaebfeb
• https://git.kernel.org/stable/c/a182c0bbb3c0332189f04b241a71455539f58433
• https://git.kernel.org/stable/c/c85c0d897b91c74c0a2c0d0ad29f1ae970dc1e0d

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