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CVE-2026-98877

unscored Published
NVD · CVE.org

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.

Fix

Microsoft's update · Moderate

  • Release Notes — azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 · build 6.6.159.1-1

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-30.

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 5

  1. StatusReceived → PublishedNVD modified 2026-10-26 06:55
  2. StatusPublished → ReceivedNVD modified 2026-10-26 07:17
  3. StatusReceived → PublishedNVD modified 2026-10-23 11:37
  4. StatusPublished → ReceivedNVD modified 2026-10-23 12:18
  5. First seenunscored · linuxNVD modified 2026-10-23 11:37

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 7