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| author |   Ryosuke Yasuoka <ryasuoka@redhat.com> | 2024-03-20 09:54:10 +0900 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2024-03-22 09:41:39 +0000 |
| commit | d24b03535e5eb82e025219c2f632b485409c898f (patch) | |
| tree | 50176b375cc9d3592ebf2d72de88bad21e14b115 /arch/riscv | |
| parent | Merge tag 'net-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff) | |
| download | wireguard-linux-d24b03535e5eb82e025219c2f632b485409c898f.tar.xz wireguard-linux-d24b03535e5eb82e025219c2f632b485409c898f.zip | |
nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet
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>
Diffstat (limited to 'arch/riscv')
0 files changed, 0 insertions, 0 deletions