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ip/cifsd: exit to close connection when we get malformed smb header (fixes linux mount hang)

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cinap_lenrek 2019-09-10 21:17:23 +02:00
parent 481a4c75fd
commit 67edb3bd01
1 changed files with 2 additions and 0 deletions
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2
sys/src/cmd/ip/cifsd/main.c
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@ -85,10 +85,12 @@ receive(uchar *h, uchar *e)
if((n = unpack(h, h, e, "lb____bww{.________}__wwww", &magic, if((n = unpack(h, h, e, "lb____bww{.________}__wwww", &magic,
&r.cmd, &r.flags, &r.flags2, &hpid, &sig, &r.tid, &r.pid, &r.uid, &r.mid)) == 0){ &r.cmd, &r.flags, &r.flags2, &hpid, &sig, &r.tid, &r.pid, &r.uid, &r.mid)) == 0){
logit("bad smb header"); logit("bad smb header");
exits("botch");
return; return;
} }
if(magic != MAGIC){ if(magic != MAGIC){
logit("bad smb magic"); logit("bad smb magic");
exits("botch");
return; return;
} }
r.pid |= hpid<<16; r.pid |= hpid<<16;