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linux/arch/riscv/kvm
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Radim Krčmář c76bf83591 RISC-V: KVM: fix stack overrun when loading vlenb 
commit 799766208f upstream.

The userspace load can put up to 2048 bits into an xlen bit stack
buffer.  We want only xlen bits, so check the size beforehand.

Fixes: 2fa290372d ("RISC-V: KVM: add 'vlenb' Vector CSR")
Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@ventanamicro.com>
Reviewed-by: Nutty Liu <liujingqi@lanxincomputing.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Link: https://lore.kernel.org/r/20250805104418.196023-4-rkrcmar@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-09-04 15:31:52 +02:00
..
aia.c RISC-V: KVM: Fix csr_write -> csr_set for HVIEN PMU overflow bit 2024-12-27 14:01:57 +01:00
aia_aplic.c RISC-V: KVM: Fix APLIC in_clrip and clripnum write emulation 2024-12-05 14:02:08 +01:00
aia_device.c RISC-V: KVM: Share APLIC and IMSIC defines with irqchip drivers 2024-06-26 18:37:32 +05:30
aia_imsic.c RISCV: KVM: use raw_spinlock for critical section in imsic 2024-10-20 12:10:44 -04:00
Kconfig kvm: replace __KVM_HAVE_READONLY_MEM with Kconfig symbol 2024-02-08 08:41:06 -05:00
main.c KVM: Rename arch hooks related to per-CPU virtualization enabling 2024-09-04 11:02:33 -04:00
Makefile kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
mmu.c KVM: delete .change_pte MMU notifier callback 2024-04-11 13:18:27 -04:00
tlb.c riscv: Rearrange hwcap.h and cpufeature.h 2023-11-09 10:15:51 -08:00
trace.h RISCV: KVM: add tracepoints for entry and exit events 2024-06-26 18:37:36 +05:30
vcpu.c ARM: 2024-07-20 12:41:03 -07:00
vcpu_exit.c RISC-V: KVM: Redirect AMO load/store access fault traps to guest 2024-06-26 18:37:41 +05:30
vcpu_fp.c riscv: Rearrange hwcap.h and cpufeature.h 2023-11-09 10:15:51 -08:00
vcpu_insn.c KVM: riscv: Support guest wrs.nto 2024-07-12 08:54:51 -07:00
vcpu_onereg.c RISC-V Patches for the 6.11 Merge Window, Part 1 2024-07-20 09:11:27 -07:00
vcpu_pmu.c RISC-V: KVM: Disable the kernel perf counter during configure 2025-04-10 14:39:11 +02:00
vcpu_sbi.c RISC-V: KVM: lock the correct mp_state during reset 2025-06-19 15:31:53 +02:00
vcpu_sbi_base.c RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions 2023-04-21 17:38:44 +05:30
vcpu_sbi_hsm.c riscv: KVM: Fix hart suspend_type use 2025-03-07 18:25:36 +01:00
vcpu_sbi_pmu.c RISC-V: KVM: Improve firmware counter read function 2024-04-26 13:13:54 +05:30
vcpu_sbi_replace.c RISC-V: KVM: Don't treat SBI HFENCE calls as NOPs 2025-06-27 11:11:45 +01:00
vcpu_sbi_sta.c RISC-V: KVM: Rename the SBI_STA_SHMEM_DISABLE to a generic name 2024-04-22 11:13:52 +05:30
vcpu_sbi_v01.c RISC-V: KVM: Modify SBI extension handler to return SBI error code 2023-02-07 20:35:45 +05:30
vcpu_switch.S riscv: kvm: use ".L" local labels in assembly when applicable 2023-12-29 12:31:33 +05:30
vcpu_timer.c RISC-V: KVM: do not EOPNOTSUPP in set KVM_REG_RISCV_TIMER_REG 2023-08-08 17:25:49 +05:30
vcpu_vector.c RISC-V: KVM: fix stack overrun when loading vlenb 2025-09-04 15:31:52 +02:00
vm.c RISC-V: KVM: Implement kvm_arch_vcpu_ioctl_set_guest_debug() 2024-04-08 14:06:27 +05:30
vmid.c RISC-V: KVM: Drop the _MASK suffix from hgatp.VMID mask defines 2023-04-21 17:45:44 +05:30