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ad362fe07f
linux/arch/arm64/kvm
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Oliver Upton ad362fe07f KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache 
There is a potential UAF scenario in the case of an LPI translation
cache hit racing with an operation that invalidates the cache, such
as a DISCARD ITS command. The root of the problem is that
vgic_its_check_cache() does not elevate the refcount on the vgic_irq
before dropping the lock that serializes refcount changes.

Have vgic_its_check_cache() raise the refcount on the returned vgic_irq
and add the corresponding decrement after queueing the interrupt.

Cc: stable@vger.kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240104183233.3560639-1-oliver.upton@linux.dev
2024-01-04 19:26:34 +00:00
..
hyp ARM: 2023-11-02 15:45:15 -10:00
vgic KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache 2024-01-04 19:26:34 +00:00
.gitignore KVM: arm64: Generate hyp_constants.h for the host 2021-12-06 08:37:03 +00:00
arch_timer.c KVM/arm64 updates for 6.7 2023-10-31 16:37:07 -04:00
arm.c ARM: 2023-11-02 15:45:15 -10:00
debug.c arm64/sysreg: Rename TRBIDR_EL1 fields per auto-gen tools format 2023-06-14 14:37:33 +01:00
emulate-nested.c KVM/arm64 updates for 6.7 2023-10-31 16:37:07 -04:00
fpsimd.c KVM: arm64: Rework CPTR_EL2 programming for HVHE configuration 2023-06-12 23:17:24 +00:00
guest.c Merge branch 'for-next/cpus_have_const_cap' into for-next/core 2023-10-26 17:10:18 +01:00
handle_exit.c KVM: arm64: nv: Expand ERET trap forwarding to handle FGT 2023-08-17 10:00:27 +01:00
hypercalls.c Merge branch kvm-arm64/smccc-filter-cleanups into kvmarm/next 2023-10-30 20:18:37 +00:00
inject_fault.c KVM: arm64: Fix repeated words in comments 2023-04-21 13:46:04 +01:00
Kconfig Merge branch kvm-arm64/tlbi-range into kvmarm-master/next 2023-08-28 09:29:02 +01:00
Makefile KVM: arm64: nv: Filter out unsupported features from ID regs 2023-02-11 10:13:30 +00:00
mmio.c KVM: arm64: Add tracepoint for MMIO accesses where ISV==0 2023-10-30 20:17:22 +00:00
mmu.c ARM: 2023-11-02 15:45:15 -10:00
nested.c KVM: arm64: nv: Add support for HCRX_EL2 2023-08-17 10:00:28 +01:00
pkvm.c KVM: arm64: Move VTCR_EL2 into struct s2_mmu 2023-10-23 18:48:46 +00:00
pmu-emul.c Merge branch kvm-arm64/pmu_pmcr_n into kvmarm/next 2023-10-30 20:24:19 +00:00
pmu.c KVM: arm64: pmu: Drop redundant check for non-NULL kvm_pmu_events 2023-10-12 16:13:39 +01:00
psci.c Merge branch kvm-arm64/smccc-filtering into kvmarm-master/next 2023-04-21 09:44:32 +01:00
pvtime.c KVM: MMU: Make the definition of 'INVALID_GPA' common 2023-01-19 21:48:38 +00:00
reset.c KVM: arm64: Get rid of vCPU-scoped feature bitmap 2023-09-21 18:13:29 +00:00
stacktrace.c arm64: stacktrace: track hyp stacks in unwinder's address space 2022-09-09 12:30:08 +01:00
sys_regs.c ARM: 2023-11-02 15:45:15 -10:00
sys_regs.h KVM: arm64: Save ID registers' sanitized value per guest 2023-06-15 12:55:08 +00:00
trace_arm.h KVM: arm64: Add tracepoint for MMIO accesses where ISV==0 2023-10-30 20:17:22 +00:00
trace_handle_exit.h KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit 2021-08-20 11:12:18 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
trng.c KVM: arm64: Implement the TRNG hypervisor call 2021-01-25 22:19:31 +00:00
va_layout.c arm64: alternatives: kvm: prepare for cap changes 2022-09-16 17:15:02 +01:00
vgic-sys-reg-v3.c KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP 2022-07-17 11:55:33 +01:00
vmid.c KVM: arm64: Reload stage-2 for VMID change on VHE 2023-10-20 17:52:01 +00:00