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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-89727

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 255de897e7fb918a34845167c572b5bf8e1d9d79 to < 78b95c571d021391153a5ac7981e9e4d5cc856a3affected
  • 255de897e7fb918a34845167c572b5bf8e1d9d79 to < c6d9c8ac6521d3049ec90ac58bebd23ed03ac496affected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References