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(parent: 2a6de04) | patch
net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh
authorMuhammad Usama Anjum <musamaanjum@gmail.com>
Thu, 8 Apr 2021 22:01:29 +0000 (03:01 +0500)
committerDavid S. Miller <davem@davemloft.net>
Thu, 8 Apr 2021 23:41:46 +0000 (16:41 -0700)
commit5f6a00921317281b4a2b554f517a8972604e12f9
treedc7d062aa31dd41d2dde3653442a412fec116feftree | snapshot
parent2a6de04cc6b43f0708a1ab96c831bddab4ff53c3commit | diff
net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh

nlh is being checked for validtity two times when it is dereferenced in
this function. Check for validity again when updating the flags through
nlh pointer to make the dereferencing safe.

CC: <stable@vger.kernel.org>
Addresses-Coverity: ("NULL pointer dereference")
Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/route.c diff | blob | history
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