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CVE.org (no NVD analysis yet)· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 3e4cae9f1472ba3c9fe87edee24074618b51f537, 4761493dd663443f7353c184e6fa16e1cb3ac5a1, a2508b8855acc96abe69be73b41b672f1ef12516; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3e4cae9f1472ba3c9fe87edee24074618b51f537, 4761493dd663443f7353c184e6fa16e1cb3ac5a1, a2508b8855acc96abe69be73b41b672f1ef12516; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed When accidentally setting “kvm-arm.vgic_v4_enable=1” on a system that has no MSI controller device tree node and GICv4, it results a panic as “gic_domain” is NULL and the kernel attempts to access it. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028 Mem abort info: ESR = 0x0000000096000006 CPU: 1 UID: 0 PID: 295 Comm: lkvm-static Not tainted 7.1.0-rc4-ge3f15ad3970e #5 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 81402005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : __irq_domain_instantiate+0x1d4/0x578 lr : __irq_domain_instantiate+0x1cc/0x578 Set vLPI support to false at init time if the host has no ITS, so it propagates properly to kvm_vgic_global_state.has_gicv4.

—No exploit Fix available
Published
Oct 23, 2026
Updated
Oct 26, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.15affected
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before 3e4cae9f1472ba3c9fe87edee24074618b51f537affected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before a2508b8855acc96abe69be73b41b672f1ef12516affected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before e79934064be85fc9a3a6434da857307d8b78e33daffected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before 4761493dd663443f7353c184e6fa16e1cb3ac5a1affected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before ab233119a19716b8f33e73ea7e092e0eb353cfbfaffected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40affected · git
    • a75460547e13c99762c2f9dbfcdd13ad416f91c5 and later · before e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5affected · git
    • before 4.15not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98875Oct 23, 2026 · drm/nouveau/gsp: add SEC2 to GA100 chip table
    0Monitor
  • ← EarlierCVE-2026-98876Oct 23, 2026 · host1x: bus: Fix missing ops null check in error teardown
    0Monitor
  • Later →CVE-2026-98878Oct 23, 2026 · irqchip/gic-v5: Immediately exec priority drop following activate
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3e4cae9f1472ba3c9fe87edee24074618b51f537Vendor (CNA)
Linux Linux4761493dd663443f7353c184e6fa16e1cb3ac5a1Vendor (CNA)
Linux Linuxa2508b8855acc96abe69be73b41b672f1ef12516Vendor (CNA)
Linux Linuxab233119a19716b8f33e73ea7e092e0eb353cfbfVendor (CNA)
Linux Linuxc8a911b3b07baa0aeb3dbc4e16a4670bd21bed40Vendor (CNA)
Linux Linuxe61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5Vendor (CNA)
Linux Linuxe79934064be85fc9a3a6434da857307d8b78e33dVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 8, 2026+16 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records