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(parent: a9b8cb5) | patch
arm64: fix possible spectre-v1 in ptrace_hbp_get_event()
authorMark Rutland <mark.rutland@arm.com>
Wed, 25 Apr 2018 16:13:40 +0000 (17:13 +0100)
committerWill Deacon <will.deacon@arm.com>
Thu, 26 Apr 2018 15:58:39 +0000 (16:58 +0100)
commit43db335e554a24ec9044e397fb9bdf40193dc23c
treedd3b7b1e9dc98708b0f28711df83b16b7eb85ebftree | snapshot
parenta9b8cb5fe65aa124fbc84ecd7b30a1c36c05294dcommit | diff
arm64: fix possible spectre-v1 in ptrace_hbp_get_event()

It's possible for userspace to control idx. Sanitize idx when using it
as an array index.

Found by smatch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
arch/arm64/kernel/ptrace.c diff | blob | history
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