Messages in this thread Patch in this message | | | From | Edward Adam Davis <> | Subject | Re: [syzbot] [bpf?] UBSAN: array-index-out-of-bounds in check_stack_range_initialized | Date | Wed, 20 Mar 2024 17:40:06 +0800 |
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please test oob in check_stack_range_initialized
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 1dd3b99d1bb9..ed0878f4373a 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -7177,6 +7177,11 @@ static int check_stack_range_initialized( return 0; } + if (INT_MIN - access_size > max_off) { + verbose(env, "invalid access size\n"); + return -EACCES; + } + for (i = min_off; i < max_off + access_size; i++) { u8 *stype;
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