VulnerabilityPublished 23 Oct 2026

CVE-2026-98877: Linux kernel · irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed

Source GCVE Database

Authoritative record:CVE-2026-98877· High

Not known to be exploited · fixed in e79934064be85fc9a3a6434da857307d8b78e33d : patch Linux kernel soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity

High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e79934064be85fc9a3a6434da857307d8b78e33d, e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5, c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40 +4

Exploitation evidence

Disclosed: evidence found.
CVE published 23 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-32qr-g6m6-8v7x

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < e79934064be85fc9a3a6434da857307d8b78e33d	Fixed in e79934064be85fc9a3a6434da857307d8b78e33d
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5	Fixed in e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40	Fixed in c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < ab233119a19716b8f33e73ea7e092e0eb353cfbf	Fixed in ab233119a19716b8f33e73ea7e092e0eb353cfbf
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < a2508b8855acc96abe69be73b41b672f1ef12516	Fixed in a2508b8855acc96abe69be73b41b672f1ef12516
LinuxLinux	Affected ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < 4761493dd663443f7353c184e6fa16e1cb3ac5a1	Fixed in 4761493dd663443f7353c184e6fa16e1cb3ac5a1

AI-suggested

A fix is available that disables vLPI support at initialization if the host has no ITS, preventing the NULL pointer dereference. Users should update to a Linux kernel version that includes this fix. Since no specific patch links or versions are provided, check the vendor or Linux kernel advisories for the official patch and update guidance.

Description

A vulnerability in the Linux kernel's irqchip/gic-v4 component was resolved. The issue occurs when the kernel parameter kvm-arm.vgic_v4_enable=1 is set on a system lacking an MSI controller device tree node and GICv4, causing a NULL pointer dereference and kernel panic. The fix involves disabling vLPI support at initialization if the host has no ITS, preventing the kernel from accessing a NULL gic_domain pointer.

References

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