VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93076: Linux kernel · dax/fsdev: clear vmemmap_shift when binding static pgmap

Affects Linux kernelSource CVE Database V5

Not known to be exploited : upgrade to e0239229931faf9ca3367e3befcf16f77b2cd45b or d298a0513aaf7d48f2a9f4a90041de910750cfcf when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e0239229931faf9ca3367e3befcf16f77b2cd45b, d298a0513aaf7d48f2a9f4a90041de910750cfcf

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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 Linux kernel to e0239229931faf9ca3367e3befcf16f77b2cd45b or d298a0513aaf7d48f2a9f4a90041de910750cfcf.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d5406bd458b0ac10b1301a4d5801d85c8f648637, < e0239229931faf9ca3367e3befcf16f77b2cd45b	Fixed in e0239229931faf9ca3367e3befcf16f77b2cd45b
LinuxLinux	Affected ≥ d5406bd458b0ac10b1301a4d5801d85c8f648637, < d298a0513aaf7d48f2a9f4a90041de910750cfcf	Fixed in d298a0513aaf7d48f2a9f4a90041de910750cfcf
LinuxLinux	Affected =7.1	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: dax/fsdev: clear vmemmap_shift when binding static pgmap Clear pgmap->vmemmap_shift for static DAX devices. When rebinding a static device from device_dax (which may set vmemmap_shift based on alignment) to fsdev_dax, the stale vmemmap_shift persists on the shared pgmap. Explicitly zero it before devm_memremap_pages() so the vmemmap is built for order-0 folios as fsdev requires.

References

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