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openSUSE:12.2
libvirt
6039a2cb-CVE-2012-3445.patch
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File 6039a2cb-CVE-2012-3445.patch of Package libvirt
commit 6039a2cb49c8af4c68460d2faf365a7e1c686c7b Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jul 30 12:14:54 2012 +0200 daemon: Fix crash in virTypedParameterArrayClear Daemon uses the following pattern when dispatching APIs with typed parameters: VIR_ALLOC_N(params, nparams); virDomain*(dom, params, &nparams, flags); virTypedParameterArrayClear(params, nparams); In case nparams was originally set to 0, virDomain* API would fill it with the number of typed parameters it can provide and we would use this number (rather than zero) to clear params. Because VIR_ALLOC* returns non-NULL pointer even if size is 0, the code would end up walking through random memory. If we were lucky enough and the memory contained 7 (VIR_TYPED_PARAM_STRING) at the right place, we would try to free a random pointer and crash. Let's make sure params stays NULL when nparams is 0. Index: libvirt-0.9.11.4/daemon/remote.c =================================================================== --- libvirt-0.9.11.4.orig/daemon/remote.c +++ libvirt-0.9.11.4/daemon/remote.c @@ -964,7 +964,7 @@ remoteDispatchDomainGetSchedulerParamete virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) + if (nparams && VIR_ALLOC_N(params, nparams) < 0) goto no_memory; if (!(dom = get_nonnull_domain(priv->conn, args->dom))) @@ -1019,7 +1019,7 @@ remoteDispatchDomainGetSchedulerParamete virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) + if (nparams && VIR_ALLOC_N(params, nparams) < 0) goto no_memory; if (!(dom = get_nonnull_domain(priv->conn, args->dom))) @@ -1200,7 +1200,7 @@ remoteDispatchDomainBlockStatsFlags(virN virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; } @@ -1674,7 +1674,7 @@ remoteDispatchDomainGetMemoryParameters( virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; } @@ -1739,7 +1739,7 @@ remoteDispatchDomainGetNumaParameters(vi virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; } @@ -1804,7 +1804,7 @@ remoteDispatchDomainGetBlkioParameters(v virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; } @@ -2064,7 +2064,7 @@ remoteDispatchDomainGetBlockIoTune(virNe goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; } @@ -3563,7 +3563,7 @@ remoteDispatchDomainGetInterfaceParamete virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); goto cleanup; } - if (VIR_ALLOC_N(params, nparams) < 0) { + if (nparams && VIR_ALLOC_N(params, nparams) < 0) { virReportOOMError(); goto cleanup; }
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