linux-kernel - [RFC PATCH 0/1][RESEND] Fix KASAN: slab-out-of-bounds Read in sk_psock

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Date:   Thu, 14 Jul 2022 00:13:23 +0600
From:   Khalid Masum <khalid.masum.92@...il.com>
To:     linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc:     Shuah Khan <skhan@...uxfoundation.org>,
        Pavel Skripkin <paskripkin@...il.com>,
        khalid.masum.92@...il.com, Marc Kleine-Budde <mkl@...gutronix.de>,
        Stefano Garzarella <sgarzare@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        syzbot+1fa91bcd05206ff8cbb5@...kaller.appspotmail.com
Subject: [RFC PATCH 0/1][RESEND] Fix KASAN: slab-out-of-bounds Read in sk_psock_get

Using size of sk_psock as the size for kcm_psock_cache size no longer
reproduces the issue. There might be a better way to solve this issue
though so I would like to ask for feedback.

The patch was sent to the wrong mailing list so resending it. Please
ignore the previous one.

Reported-and-tested-by: syzbot+1fa91bcd05206ff8cbb5@...kaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=1fa91bcd05206ff8cbb5

Khalid Masum (1):
  net: kcm: Use sk_psock size for kcm_psock_cache

 net/kcm/kcmsock.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.36.1