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authorRyosuke Yasuoka <ryasuoka@redhat.com>2024-03-20 09:54:10 +0900
committerDavid S. Miller <davem@davemloft.net>2024-03-22 09:41:39 +0000
commitd24b03535e5eb82e025219c2f632b485409c898f (patch)
tree50176b375cc9d3592ebf2d72de88bad21e14b115 /tools/testing/selftests/livepatch/README
parentMerge tag 'net-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff)
downloadwireguard-linux-stable.tar.xz
wireguard-linux-stable.zip
nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packetHEADstabledavem/net
syzbot reported the following uninit-value access issue [1][2]: nci_rx_work() parses and processes received packet. When the payload length is zero, each message type handler reads uninitialized payload and KMSAN detects this issue. The receipt of a packet with a zero-size payload is considered unexpected, and therefore, such packets should be silently discarded. This patch resolved this issue by checking payload size before calling each message type handler codes. Fixes: 6a2968aaf50c ("NFC: basic NCI protocol implementation") Reported-and-tested-by: syzbot+7ea9413ea6749baf5574@syzkaller.appspotmail.com Reported-and-tested-by: syzbot+29b5ca705d2e0f4a44d2@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=7ea9413ea6749baf5574 [1] Closes: https://syzkaller.appspot.com/bug?extid=29b5ca705d2e0f4a44d2 [2] Signed-off-by: Ryosuke Yasuoka <ryasuoka@redhat.com> Reviewed-by: Jeremy Cline <jeremy@jcline.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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