linux-kernel - Re: [PATCH virt] virt: fix uninit-value in vhost_vsock_dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Sun, 21 Apr 2024 12:06:06 +0900
From: Jeongjun Park <aha310510@...il.com>
To: mst@...hat.com
Cc: jasowang@...hat.com,
	kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	sgarzare@...hat.com,
	stefanha@...hat.com,
	syzbot+6c21aeb59d0e82eb2782@...kaller.appspotmail.com,
	syzkaller-bugs@...glegroups.com,
	virtualization@...ts.linux.dev
Subject: Re: [PATCH virt] virt: fix uninit-value in vhost_vsock_dev_open

static bool vhost_transport_seqpacket_allow(u32 remote_cid)
{
...
	vsock = vhost_vsock_get(remote_cid);

	if (vsock)
		seqpacket_allow = vsock->seqpacket_allow;
...
}

I think this is due to reading a previously created uninitialized 
vsock->seqpacket_allow inside vhost_transport_seqpacket_allow(), 
which is executed by the function pointer present in the if statement.

Thanks