VulnerabilityPublished 28 Aug 2026Updated 21 Oct 2026

CVE-2026-80676: Linux kernel · Drivers: hv: vmbus: use generic driver_override infrastructure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d1cb12ae81d2f7a58b0b1cfb51862afca98e6058 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d1cb12ae81d2f7a58b0b1cfb51862afca98e6058, a1656234a4a2dc6e975546867887c5f63e4a90f0, 331d8900121a1d74ecd45cd2db742ddcb5a0a565 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Aug 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d765edbb301c0e196015a59b17420558088ea33f, < d1cb12ae81d2f7a58b0b1cfb51862afca98e6058	Fixed in d1cb12ae81d2f7a58b0b1cfb51862afca98e6058
LinuxLinux	Affected ≥ d765edbb301c0e196015a59b17420558088ea33f, < a1656234a4a2dc6e975546867887c5f63e4a90f0	Fixed in a1656234a4a2dc6e975546867887c5f63e4a90f0
LinuxLinux	Affected ≥ d765edbb301c0e196015a59b17420558088ea33f, < 331d8900121a1d74ecd45cd2db742ddcb5a0a565	Fixed in 331d8900121a1d74ecd45cd2db742ddcb5a0a565
LinuxLinux	Affected ≥ d765edbb301c0e196015a59b17420558088ea33f, < 2fb010ea7ca98cd09a6d365260b769f627e73a76	Fixed in 2fb010ea7ca98cd09a6d365260b769f627e73a76
LinuxLinux	Affected ≥ d765edbb301c0e196015a59b17420558088ea33f, < 0e2f0833556c8c5269deb457b89d538644a3b747	Fixed in 0e2f0833556c8c5269deb457b89d538644a3b747
LinuxLinux	Affected =4.20	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

References

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