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Message-ID: <000000000000b8e7bb060c78afcc@google.com>
Date: Thu, 14 Dec 2023 05:59:03 -0800
From: syzbot <syzbot+94bbb75204a05da3d89f@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse
For archival purposes, forwarding an incoming command email to
linux-kernel@...r.kernel.org.
***
Subject: [net?] KASAN: slab-out-of-bounds Read in dns_resolver_preparse
Author: eadavis@...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/security/keys/keyctl.c b/security/keys/keyctl.c
index 10ba439968f7..f28ba8a703fe 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -83,7 +83,7 @@ SYSCALL_DEFINE5(add_key, const char __user *, _type,
long ret;
ret = -EINVAL;
- if (plen > 1024 * 1024 - 1)
+ if (plen > 1024 * 1024 - 1 || plen < 48)
goto error;
/* draw all the data into kernel space */
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