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libvirt: Backport fix for CVE-2024-2494

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Upstream-Status: Backport [8a3f8d9575]

Signed-off-by: Ashish Sharma <asharma@mvista.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
This commit is contained in:
Ashish Sharma 2024-05-22 07:28:33 +05:30 committed by Bruce Ashfield
parent 8f0eb65eda
commit 69f5a594ce
2 changed files with 221 additions and 0 deletions
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220
recipes-extended/libvirt/libvirt/CVE-2024-2494.patch Normal file
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@ -0,0 +1,220 @@
From 8a3f8d957507c1f8223fdcf25a3ff885b15557f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
Date: Fri, 15 Mar 2024 10:47:50 +0000
Subject: [PATCH] remote: check for negative array lengths before allocation
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
While the C API entry points will validate non-negative lengths
for various parameters, the RPC server de-serialization code
will need to allocate memory for arrays before entering the C
API. These allocations will thus happen before the non-negative
length check is performed.
Passing a negative length to the g_new0 function will usually
result in a crash due to the negative length being treated as
a huge positive number.
This was found and diagnosed by ALT Linux Team with AFLplusplus.
CVE-2024-2494
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Found-by: Alexandr Shashkin <dutyrok@altlinux.org>
Co-developed-by: Alexander Kuznetsov <kuznetsovam@altlinux.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
CVE: CVE-2024-2494
Upstream-Status: Backport [https://gitlab.com/libvirt/libvirt/-/commit/8a3f8d957507c1f8223fdcf25a3ff885b15557f2]
Signed-off-by: Ashish Sharma <asharma@mvista.com>
src/remote/remote_daemon_dispatch.c | 65 +++++++++++++++++++++++++++++
src/rpc/gendispatch.pl | 5 +++
2 files changed, 70 insertions(+)
diff --git a/src/remote/remote_daemon_dispatch.c b/src/remote/remote_daemon_dispatch.c
index aaabd1e56c..01dcac4b12 100644
--- a/src/remote/remote_daemon_dispatch.c
+++ b/src/remote/remote_daemon_dispatch.c
@@ -2291,6 +2291,10 @@ remoteDispatchDomainGetSchedulerParameters(virNetServer *server G_GNUC_UNUSED,
if (!conn)
goto cleanup;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_SCHEDULER_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -2339,6 +2343,10 @@ remoteDispatchDomainGetSchedulerParametersFlags(virNetServer *server G_GNUC_UNUS
if (!conn)
goto cleanup;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_SCHEDULER_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -2497,6 +2505,10 @@ remoteDispatchDomainBlockStatsFlags(virNetServer *server G_GNUC_UNUSED,
goto cleanup;
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_BLOCK_STATS_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -2717,6 +2729,14 @@ remoteDispatchDomainGetVcpuPinInfo(virNetServer *server G_GNUC_UNUSED,
if (!(dom = get_nonnull_domain(conn, args->dom)))
goto cleanup;
+ if (args->ncpumaps < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("ncpumaps must be non-negative"));
+ goto cleanup;
+ }
+ if (args->maplen < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maplen must be non-negative"));
+ goto cleanup;
+ }
if (args->ncpumaps > REMOTE_VCPUINFO_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("ncpumaps > REMOTE_VCPUINFO_MAX"));
goto cleanup;
@@ -2811,6 +2831,11 @@ remoteDispatchDomainGetEmulatorPinInfo(virNetServer *server G_GNUC_UNUSED,
if (!(dom = get_nonnull_domain(conn, args->dom)))
goto cleanup;
+ if (args->maplen < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maplen must be non-negative"));
+ goto cleanup;
+ }
+
/* Allocate buffers to take the results */
if (args->maplen > 0)
cpumaps = g_new0(unsigned char, args->maplen);
@@ -2858,6 +2883,14 @@ remoteDispatchDomainGetVcpus(virNetServer *server G_GNUC_UNUSED,
if (!(dom = get_nonnull_domain(conn, args->dom)))
goto cleanup;
+ if (args->maxinfo < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maxinfo must be non-negative"));
+ goto cleanup;
+ }
+ if (args->maplen < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maxinfo must be non-negative"));
+ goto cleanup;
+ }
if (args->maxinfo > REMOTE_VCPUINFO_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maxinfo > REMOTE_VCPUINFO_MAX"));
goto cleanup;
@@ -3096,6 +3129,10 @@ remoteDispatchDomainGetMemoryParameters(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -3156,6 +3193,10 @@ remoteDispatchDomainGetNumaParameters(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_NUMA_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -3216,6 +3257,10 @@ remoteDispatchDomainGetBlkioParameters(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_BLKIO_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -3277,6 +3322,10 @@ remoteDispatchNodeGetCPUStats(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_NODE_CPU_STATS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -3339,6 +3388,10 @@ remoteDispatchNodeGetMemoryStats(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_NODE_MEMORY_STATS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -3514,6 +3567,10 @@ remoteDispatchDomainGetBlockIoTune(virNetServer *server G_GNUC_UNUSED,
if (!conn)
goto cleanup;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_BLOCK_IO_TUNE_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -5081,6 +5138,10 @@ remoteDispatchDomainGetInterfaceParameters(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_DOMAIN_INTERFACE_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
@@ -5301,6 +5362,10 @@ remoteDispatchNodeGetMemoryParameters(virNetServer *server G_GNUC_UNUSED,
flags = args->flags;
+ if (args->nparams < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams must be non-negative"));
+ goto cleanup;
+ }
if (args->nparams > REMOTE_NODE_MEMORY_PARAMETERS_MAX) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
diff --git a/src/rpc/gendispatch.pl b/src/rpc/gendispatch.pl
index 5ce988c5ae..c5842dc796 100755
--- a/src/rpc/gendispatch.pl
+++ b/src/rpc/gendispatch.pl
@@ -1070,6 +1070,11 @@ elsif ($mode eq "server") {
print "\n";
if ($single_ret_as_list) {
+ print " if (args->$single_ret_list_max_var < 0) {\n";
+ print " virReportError(VIR_ERR_RPC,\n";
+ print " \"%s\", _(\"max$single_ret_list_name must be non-negative\"));\n";
+ print " goto cleanup;\n";
+ print " }\n";
print " if (args->$single_ret_list_max_var > $single_ret_list_max_define) {\n";
print " virReportError(VIR_ERR_RPC,\n";
print " \"%s\", _(\"max$single_ret_list_name > $single_ret_list_max_define\"));\n";
--
GitLab

1
recipes-extended/libvirt/libvirt_8.1.0.bb
View File

@ -30,6 +30,7 @@ SRC_URI = "http://libvirt.org/sources/libvirt-${PV}.tar.xz;name=libvirt \
file://gnutls-helper.py \
file://0001-qemu-segmentation-fault-in-virtqemud-executing-qemuD.patch \
file://CVE-2023-2700.patch \
file://CVE-2024-2494.patch \
"
SRC_URI[libvirt.sha256sum] = "3c6c43becffeb34a3f397c616206aa69a893ff8bf5e8208393c84e8e75352934"