From: syzbot <syzbot+94bbb75204a05da3d89f@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse
Date: Thu, 14 Dec 2023 06:18:33 -0800 [thread overview]
Message-ID: <000000000000759c2d060c78f55b@google.com> (raw)
In-Reply-To: <0000000000009b39bc060c73e209@google.com>
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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;
next prev parent reply other threads:[~2023-12-14 14:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 8:15 [syzbot] [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse syzbot
2023-12-14 13:59 ` syzbot
2023-12-14 14:18 ` syzbot [this message]
[not found] ` <tencent_B0E34B701B7025C7BAFDBB2833BB9EE41B08@qq.com>
2023-12-15 3:00 ` [PATCH next] keys/dns: datalen must greater than sizeof(*v1) Jarkko Sakkinen
[not found] ` <tencent_7D663C8936BA96F837124A4474AF76ED6709@qq.com>
2023-12-16 21:06 ` [PATCH V2 next] keys/dns: fix slab-out-of-bounds in dns_resolver_preparse Simon Horman
2023-12-23 23:17 ` [syzbot] [net?] KASAN: slab-out-of-bounds Read " David Howells
2023-12-23 23:17 ` syzbot
2023-12-23 23:34 ` David Howells
2023-12-23 23:59 ` syzbot
[not found] <tencent_1ABB7A33479EB71B484B311B402575BA2008@qq.com>
2023-12-14 14:21 ` syzbot
[not found] <tencent_2EA5A7E0C6D492E88651C99CAECCAECBCC06@qq.com>
2023-12-14 14:42 ` syzbot
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