Messages in this thread Patch in this message | | | Date | Thu, 14 Dec 2023 06:18:33 -0800 | Subject | Re: [syzbot] [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse | From | syzbot <> |
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Subject: [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse Author: eadavis@qq.com
please test slab-out-of-bounds Read in dns_resolver_preparse
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 48e8992e33ab diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c index 3233f4f25fed..15f19521021c 100644 --- a/net/dns_resolver/dns_key.c +++ b/net/dns_resolver/dns_key.c @@ -104,7 +104,7 @@ dns_resolver_preparse(struct key_preparsed_payload *prep) if (data[0] == 0) { /* It may be a server list. */ - if (datalen <= sizeof(*bin)) + if (datalen <= sizeof(*v1)) return -EINVAL; bin = (const struct dns_payload_header *)data;
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