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linux/drivers/virt
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Haoyu Li 524f29d78c drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl 
commit 819cec1dc4 upstream.

In the "pmcmd_ioctl" function, three memory objects allocated by
kmalloc are initialized by "hcall_get_cpu_state", which are then
copied to user space. The initializer is indeed implemented in
"acrn_hypercall2" (arch/x86/include/asm/acrn.h). There is a risk of
information leakage due to uninitialized bytes.

Fixes: 3d679d5aec ("virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor")
Signed-off-by: Haoyu Li <lihaoyu499@gmail.com>
Cc: stable <stable@kernel.org>
Acked-by: Fei Li <fei1.li@intel.com>
Link: https://lore.kernel.org/r/20250130115811.92424-1-lihaoyu499@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-03-13 12:53:23 +01:00
..
acrn drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl 2025-03-13 12:53:23 +01:00
coco virt: sevguest: Fix passing a stack buffer as a scatterlist target 2023-11-20 11:52:13 +01:00
nitro_enclaves kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves 2022-09-01 13:00:48 -06:00
vboxguest virt: vbox: Remove unproper information 2022-09-09 10:19:18 +02:00
fsl_hypervisor.c drivers/virt/fsl_hypervisor: remove unneeded ret variable in fsl_hv_open() 2022-04-26 12:50:31 +02:00
Kconfig AMD SEV-SNP support 2022-05-23 17:38:01 -07:00
Makefile AMD SEV-SNP support 2022-05-23 17:38:01 -07:00
vmgenid.c virt: vmgenid: recognize new CID added by Hyper-V 2022-03-25 08:49:40 -06:00