Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 255de897e7fb918a34845167c572b5bf8e1d9d79 before 78b95c571d021391153a5ac7981e9e4d5cc856a3; affected 255de897e7fb918a34845167c572b5bf8e1d9d79 before c6d9c8ac6521d3049ec90ac58bebd23ed03ac496 |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.