VulnerabilityPublished 28 Oct 2026

CVE-2026-99134: Linux kernel · mac802154: fix data race and NULL deref on local->assoc_dev

Source GCVE Database

Authoritative record:CVE-2026-99134

Not known to be exploited · fixed in c037915f80c4db47f7d061d68e703ffd551b1a34 : patch Linux kernel soon.

Data as of 28 Oct 2026, 14:13 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in c037915f80c4db47f7d061d68e703ffd551b1a34, a585901bb8cd2cd60d678be8a56ca6a4e1a6946c, 3cdd8b1abddebbae2582e90294c77b61d5f5aee7

Exploitation evidence

Disclosed: evidence found.
CVE published 28 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-jx9p-6hjg-j64x

What to do

Upgrade Linux kernel to c037915f80c4db47f7d061d68e703ffd551b1a34, a585901bb8cd2cd60d678be8a56ca6a4e1a6946c or 3cdd8b1abddebbae2582e90294c77b61d5f5aee7.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ fefd19807fe9c65002366c749e809996a1ca4e68, < c037915f80c4db47f7d061d68e703ffd551b1a34	Fixed in c037915f80c4db47f7d061d68e703ffd551b1a34
LinuxLinux	Affected ≥ fefd19807fe9c65002366c749e809996a1ca4e68, < a585901bb8cd2cd60d678be8a56ca6a4e1a6946c	Fixed in a585901bb8cd2cd60d678be8a56ca6a4e1a6946c
LinuxLinux	Affected ≥ fefd19807fe9c65002366c749e809996a1ca4e68, < 3cdd8b1abddebbae2582e90294c77b61d5f5aee7	Fixed in 3cdd8b1abddebbae2582e90294c77b61d5f5aee7
LinuxLinux	Affected =6.8	Fixed in–

AI-suggested

A fix is available that replaces the vulnerable pointer with a cached address protected by a dedicated spinlock to prevent data races and NULL dereferences. Users should apply the official Linux kernel patch that implements this fix. No additional mitigation is required beyond applying the patch.

Description

CVE-2026-99134 is a vulnerability in the Linux kernel's mac802154 subsystem involving a data race and NULL pointer dereference on the local->assoc_dev pointer. The flaw arises from unsynchronized access between association path and association-response worker, potentially causing use-after-free or NULL dereference conditions. The issue is addressed by replacing the pointer with a cached address protected by a dedicated spinlock to ensure atomic access and proper synchronization.

References

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