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| author | Haoyu Li <lihaoyu499@gmail.com> | 2025-01-30 14:58:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-20 17:20:34 +0300 |
| commit | 819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb (patch) | |
| tree | fe80b8d043b81365f7bb81e693423ccf3c963805 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | e77aff5528a183462714f750e45add6cc71e276a (diff) | |
| download | linux-819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb.tar.xz | |
drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl
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: 3d679d5aec64 ("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>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions