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authorPaolo Abeni <pabeni@redhat.com>2019-02-21 17:43:59 +0100
committerDavid S. Miller <davem@davemloft.net>2019-02-22 16:05:11 -0800
commit424a7cd078401591fc45587ffb2c012d7f402fb7 (patch)
tree346f6616db687c22ad228fb260b4e6e47053e9e3 /net/ipv4
parentfou6: fix proto error handler argument type (diff)
downloadlinux-dev-424a7cd078401591fc45587ffb2c012d7f402fb7.tar.xz
linux-dev-424a7cd078401591fc45587ffb2c012d7f402fb7.zip
udpv6: fix possible user after free in error handler
Before derefencing the encap pointer, commit e7cc082455cb ("udp: Support for error handlers of tunnels with arbitrary destination port") checks for a NULL value, but the two fetch operation can race with removal. Fix the above using a single access. Also fix a couple of type annotations, to make sparse happy. Fixes: e7cc082455cb ("udp: Support for error handlers of tunnels with arbitrary destination port") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
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