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Merge pull request #2497 from brauner/2018-07-29/nl_fix

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nl: avoid NULL pointer dereference
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Christian Brauner 2018-07-29 18:46:42 +02:00 committed by GitHub
commit 646b1be9bb
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1 changed files with 2 additions and 1 deletions
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src/lxc/nl.c
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@ -61,7 +61,8 @@ static int nla_put(struct nlmsg *nlmsg, int attr,
rta = NLMSG_TAIL(nlmsg->nlmsghdr); rta = NLMSG_TAIL(nlmsg->nlmsghdr);
rta->rta_type = attr; rta->rta_type = attr;
rta->rta_len = rtalen; rta->rta_len = rtalen;
memcpy(RTA_DATA(rta), data, len); if (data && len)
memcpy(RTA_DATA(rta), data, len);
nlmsg->nlmsghdr->nlmsg_len = tlen; nlmsg->nlmsghdr->nlmsg_len = tlen;
return 0; return 0;
} }