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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 255de897e7fb918a34845167c572b5bf8e1d9d79, < 78b95c571d021391153a5ac7981e9e4d5cc856a3; >= 255de897e7fb918a34845167c572b5bf8e1d9d79, < c6d9c8ac6521d3049ec90ac58bebd23ed03ac496 |
| Linux | Linux | 6.19 |
References
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received