Riskcovery

CVE-2026-89727

KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID

State
Published
Severity
Not scored
Published
Sep 11, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID

vgic_v2_deactivate() passes the INTID a guest wrote to GICV_DIR straight to vgic_get_vcpu_irq(), and treats a failed lookup as a "can't happen" condition with WARN_ON_ONCE().

The guest can make it happen at will, though: for any INTID outside of the implemented SGI, PPI and SPI ranges the lookup returns NULL, since GICv2 has no LPIs. A guest running with EOImode==1 writing such an INTID to GICV_DIR triggers the WARN, and panics hosts running with panic_on_warn.

Drop the WARN and ignore failed lookups.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 255de897e7fb918a34845167c572b5bf8e1d9d79 to before 78b95c571d021391153a5ac7981e9e4d5cc856a3Affected
  • 255de897e7fb918a34845167c572b5bf8e1d9d79 to before c6d9c8ac6521d3049ec90ac58bebd23ed03ac496Affected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.2.4 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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