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Red Hat Bugzilla – Attachment 599314 Details for
Bug 841319
In-band signalling in __pmGetPDU leads to pmcd memory leak
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[patch]
proposed patch for pdu.c
patch.841319 (text/plain), 666 bytes, created by
Ken McDonell
on 2012-07-20 06:36:40 UTC
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Description:
proposed patch for pdu.c
Filename:
MIME Type:
Creator:
Ken McDonell
Created:
2012-07-20 06:36:40 UTC
Size:
666 bytes
patch
obsolete
>diff --git a/src/libpcp/src/pdu.c b/src/libpcp/src/pdu.c >index cdec982..9ca26c5 100644 >--- a/src/libpcp/src/pdu.c >+++ b/src/libpcp/src/pdu.c >@@ -525,6 +525,15 @@ check_read_len: > > *result = (__pmPDU *)php; > php->type = ntohl((unsigned int)php->type); >+ if (php->type < 0) { >+ /* >+ * PDU type is bad ... could be a possible mem leak attack like >+ * https://bugzilla.redhat.com/show_bug.cgi?id=841319 >+ */ >+ __pmNotifyErr(LOG_ERR, "__pmGetPDU: fd=%d illegal PDU type=%d in hdr", fd, php->type); >+ __pmUnpinPDUBuf(pdubuf); >+ return PM_ERR_IPC; >+ } > php->from = ntohl((unsigned int)php->from); > #ifdef PCP_DEBUG > if (pmDebug & DBG_TRACE_PDU) {
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bug 841319
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