VulnerabilityPublished 18 Oct 2026

CVE-2026-98467: Linux kernel · KVM: arm64: nv: Fix null ptr deref on nested wp/unmap, teardown race

Source GCVE Database

Authoritative record:CVE-2026-98467· Medium

Not known to be exploited · fixed in 970de111c087488e53cadf5480b94e0f695db985 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Medium

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 970de111c087488e53cadf5480b94e0f695db985, 4c74e233cdedd11592775fae2a6243e67ca3f891, 3cefc1ab511fad6a0f708e7a4aee9f91346e9457

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-c768-p8f4-45mg

What to do

Upgrade Linux kernel to 970de111c087488e53cadf5480b94e0f695db985, 4c74e233cdedd11592775fae2a6243e67ca3f891 or 3cefc1ab511fad6a0f708e7a4aee9f91346e9457.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 7270cc9157f474dfc46750a34c9d7defc686b2eb, < 970de111c087488e53cadf5480b94e0f695db985	Fixed in 970de111c087488e53cadf5480b94e0f695db985
LinuxLinux	Affected ≥ 7270cc9157f474dfc46750a34c9d7defc686b2eb, < 4c74e233cdedd11592775fae2a6243e67ca3f891	Fixed in 4c74e233cdedd11592775fae2a6243e67ca3f891
LinuxLinux	Affected ≥ 7270cc9157f474dfc46750a34c9d7defc686b2eb, < 3cefc1ab511fad6a0f708e7a4aee9f91346e9457	Fixed in 3cefc1ab511fad6a0f708e7a4aee9f91346e9457
LinuxLinux	Affected =6.16	Fixed in–
Linuxlinux/kernel`pkg:deb/linux/kernel`Other threats	Affected =6.16	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix has been implemented in the Linux kernel source code to address this issue by adding a NULL pointer check and restructuring the invalidation logic. Users should apply the official Linux kernel updates that include this fix. Since this is not a cloud service, remediation requires updating the affected Linux kernel version once the patch is released.

Description

A null pointer dereference vulnerability was identified and resolved in the Linux kernel's KVM arm64 nested virtualization code. The issue arises due to a race condition during concurrent teardown of nested stage 2 page tables, which can cause a NULL pointer dereference when invalidating VNCR_EL2. The fix involves adding a check for NULL before dereferencing and abstracting the invalidation logic to prevent the race.

References

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