VulnerabilityPublished 18 Oct 2026

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

Source GCVE Database

Authoritative record:CVE-2026-98700

Not known to be exploited · fixed in 6535f7084d95873785a7a93cdca05e8ee83b5601 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Low

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 6535f7084d95873785a7a93cdca05e8ee83b5601, 93c1b247224a32f546b616a8fe87b9bab20f0a7f, 9cedbfde1450028f530e9af950f53491fcaebfeb +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-5cc8-qw42-jp7f

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 50ff477a8639fa1fbbeecb5a6f2f8b6c5557ecec, < 6535f7084d95873785a7a93cdca05e8ee83b5601	Fixed in 6535f7084d95873785a7a93cdca05e8ee83b5601
LinuxLinux	Affected ≥ 50ff477a8639fa1fbbeecb5a6f2f8b6c5557ecec, < 93c1b247224a32f546b616a8fe87b9bab20f0a7f	Fixed in 93c1b247224a32f546b616a8fe87b9bab20f0a7f
LinuxLinux	Affected ≥ 50ff477a8639fa1fbbeecb5a6f2f8b6c5557ecec, < 9cedbfde1450028f530e9af950f53491fcaebfeb	Fixed in 9cedbfde1450028f530e9af950f53491fcaebfeb
LinuxLinux	Affected ≥ 50ff477a8639fa1fbbeecb5a6f2f8b6c5557ecec, < 4febc02cd02f021f2b6d0768332be643ef14a12d	Fixed in 4febc02cd02f021f2b6d0768332be643ef14a12d
LinuxLinux	Affected ≥ 50ff477a8639fa1fbbeecb5a6f2f8b6c5557ecec, < 2d9c5525bbc1a548cdc9c4def3cd7fbfc7c66b5b	Fixed in 2d9c5525bbc1a548cdc9c4def3cd7fbfc7c66b5b
LinuxLinux	Affected =5.7	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to correctly set info->band for 802.3 encapsulation offload frames. Users should apply the official kernel update that includes this patch. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's mac80211 wifi subsystem was resolved by ensuring the correct band information is set for 802.3 encapsulation offload frames. Previously, the function ieee80211_8023_xmit() did not set the info->band field correctly on non-MLD interfaces, causing the transmission rate selection to use an incorrect band. The fix aligns this behavior with ieee80211_build_hdr() by dropping frames without a channel context and leaving the band at 0 on MLD interfaces.

References

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