VulnerabilityPublished 18 Oct 2026

CVE-2026-98810: Linux kernel · wifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()

Source GCVE Database

Authoritative record:CVE-2026-98810· High

Not known to be exploited : upgrade to 63e7064b4c1c4b540bf2f0cba47384f92ab95307 or 6f63e919fe1e335b8abcb3a28bfd4804a98d875a soon.

Data as of 26 Oct 2026, 17:16 UTC

Severity

High

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 63e7064b4c1c4b540bf2f0cba47384f92ab95307, 6f63e919fe1e335b8abcb3a28bfd4804a98d875a

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-8wg2-h9c3-q8hh

What to do

Upgrade Linux kernel to 63e7064b4c1c4b540bf2f0cba47384f92ab95307 or 6f63e919fe1e335b8abcb3a28bfd4804a98d875a.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9b8a74e3482f9fc077a88c13fa0ceca8feb0b772, < 63e7064b4c1c4b540bf2f0cba47384f92ab95307	Fixed in 63e7064b4c1c4b540bf2f0cba47384f92ab95307
LinuxLinux	Affected ≥ 9b8a74e3482f9fc077a88c13fa0ceca8feb0b772, < 6f63e919fe1e335b8abcb3a28bfd4804a98d875a	Fixed in 6f63e919fe1e335b8abcb3a28bfd4804a98d875a
LinuxLinux	Affected =2.6.24	Fixed in–

AI-suggested

A fix has been applied to the Linux kernel to address this vulnerability by changing length validation from skb->len to skb_headlen(skb) in the affected functions. Users should update to the fixed Linux kernel versions once available. Since this is a kernel-level issue, applying the official kernel patch or upgrading to a patched kernel release is the recommended remediation.

Description

A slab-out-of-bounds read vulnerability in the Linux kernel's mac80211 wifi subsystem was fixed in the ieee80211_monitor_select_queue() function. The issue arises because skb->len, which includes both linear and non-linear data, was used to validate pointer dereferences into skb->data, potentially causing out-of-bounds reads when packets become non-linear. The fix involves checking skb_headlen(skb), the length of the linear data region, before accessing skb->data. Similar fixes were applied to ieee80211_validate_radiotap_len() and ieee80211_monitor_start_xmit() to prevent similar out-of-bounds reads.

References

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