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branch master updated: gnu: qemu: Fix CVE-2021-20203.
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guix-commits |
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branch master updated: gnu: qemu: Fix CVE-2021-20203. |
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Date: |
Sat, 27 Feb 2021 22:54:36 -0500 |
This is an automated email from the git hooks/post-receive script.
lle_bout pushed a commit to branch master
in repository guix.
The following commit(s) were added to refs/heads/master by this push:
new e05c0b3 gnu: qemu: Fix CVE-2021-20203.
e05c0b3 is described below
commit e05c0b334d55d1399303ce097f70eaa2ca3ad7df
Author: Léo Le Bouter <lle-bout@zaclys.net>
AuthorDate: Sun Feb 28 04:40:05 2021 +0100
gnu: qemu: Fix CVE-2021-20203.
* gnu/packages/patches/qemu-CVE-2021-20203.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/virtualization.scm (qemu): Apply it.
---
gnu/local.mk | 1 +
gnu/packages/patches/qemu-CVE-2021-20203.patch | 172 +++++++++++++++++++++++++
gnu/packages/virtualization.scm | 3 +-
3 files changed, 175 insertions(+), 1 deletion(-)
diff --git a/gnu/local.mk b/gnu/local.mk
index 76bb7ef..83753e6 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1561,6 +1561,7 @@ dist_patch_DATA =
\
%D%/packages/patches/python-waitress-fix-tests.patch \
%D%/packages/patches/pypy3-7.3.1-fix-tests.patch \
%D%/packages/patches/qemu-build-info-manual.patch \
+ %D%/packages/patches/qemu-CVE-2021-20203.patch \
%D%/packages/patches/qemu-glibc-2.27.patch \
%D%/packages/patches/qpdfview-qt515-compat.patch \
%D%/packages/patches/qrcodegen-cpp-make-install.patch \
diff --git a/gnu/packages/patches/qemu-CVE-2021-20203.patch
b/gnu/packages/patches/qemu-CVE-2021-20203.patch
new file mode 100644
index 0000000..9d2ceaa
--- /dev/null
+++ b/gnu/packages/patches/qemu-CVE-2021-20203.patch
@@ -0,0 +1,172 @@
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+From: P J P <ppandit@redhat.com>
+To: Dmitry Fleytman <dmitry.fleytman@gmail.com>
+Subject: [PATCH] net: vmxnet3: validate configuration values during activate
+ (CVE-2021-20203)
+Date: Sat, 30 Jan 2021 18:46:52 +0530
+Message-Id: <20210130131652.954143-1-ppandit@redhat.com>
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+Cc: Gaoning Pan <pgn@zju.edu.cn>, QEMU Developers <qemu-devel@nongnu.org>,
+ Prasad J Pandit <pjp@fedoraproject.org>
+Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org
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+
+From: Prasad J Pandit <pjp@fedoraproject.org>
+
+While activating device in vmxnet3_acticate_device(), it does not
+validate guest supplied configuration values against predefined
+minimum - maximum limits. This may lead to integer overflow or
+OOB access issues. Add checks to avoid it.
+
+Fixes: CVE-2021-20203
+Buglink: https://bugs.launchpad.net/qemu/+bug/1913873
+Reported-by: Gaoning Pan <pgn@zju.edu.cn>
+Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
+---
+ hw/net/vmxnet3.c | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
+index eff299f629..4a910ca971 100644
+--- a/hw/net/vmxnet3.c
++++ b/hw/net/vmxnet3.c
+@@ -1420,6 +1420,7 @@ static void vmxnet3_activate_device(VMXNET3State *s)
+ vmxnet3_setup_rx_filtering(s);
+ /* Cache fields from shared memory */
+ s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
++ assert(VMXNET3_MIN_MTU <= s->mtu && s->mtu < VMXNET3_MAX_MTU);
+ VMW_CFPRN("MTU is %u", s->mtu);
+
+ s->max_rx_frags =
+@@ -1473,6 +1474,9 @@ static void vmxnet3_activate_device(VMXNET3State *s)
+ /* Read rings memory locations for TX queues */
+ pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.txRingBasePA);
+ size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.txRingSize);
++ if (size > VMXNET3_TX_RING_MAX_SIZE) {
++ size = VMXNET3_TX_RING_MAX_SIZE;
++ }
+
+ vmxnet3_ring_init(d, &s->txq_descr[i].tx_ring, pa, size,
+ sizeof(struct Vmxnet3_TxDesc), false);
+@@ -1483,6 +1487,9 @@ static void vmxnet3_activate_device(VMXNET3State *s)
+ /* TXC ring */
+ pa = VMXNET3_READ_TX_QUEUE_DESCR64(d, qdescr_pa, conf.compRingBasePA);
+ size = VMXNET3_READ_TX_QUEUE_DESCR32(d, qdescr_pa, conf.compRingSize);
++ if (size > VMXNET3_TC_RING_MAX_SIZE) {
++ size = VMXNET3_TC_RING_MAX_SIZE;
++ }
+ vmxnet3_ring_init(d, &s->txq_descr[i].comp_ring, pa, size,
+ sizeof(struct Vmxnet3_TxCompDesc), true);
+ VMXNET3_RING_DUMP(VMW_CFPRN, "TXC", i, &s->txq_descr[i].comp_ring);
+@@ -1524,6 +1531,9 @@ static void vmxnet3_activate_device(VMXNET3State *s)
+ /* RX rings */
+ pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa,
conf.rxRingBasePA[j]);
+ size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa,
conf.rxRingSize[j]);
++ if (size > VMXNET3_RX_RING_MAX_SIZE) {
++ size = VMXNET3_RX_RING_MAX_SIZE;
++ }
+ vmxnet3_ring_init(d, &s->rxq_descr[i].rx_ring[j], pa, size,
+ sizeof(struct Vmxnet3_RxDesc), false);
+ VMW_CFPRN("RX queue %d:%d: Base: %" PRIx64 ", Size: %d",
+@@ -1533,6 +1543,9 @@ static void vmxnet3_activate_device(VMXNET3State *s)
+ /* RXC ring */
+ pa = VMXNET3_READ_RX_QUEUE_DESCR64(d, qd_pa, conf.compRingBasePA);
+ size = VMXNET3_READ_RX_QUEUE_DESCR32(d, qd_pa, conf.compRingSize);
++ if (size > VMXNET3_RC_RING_MAX_SIZE) {
++ size = VMXNET3_RC_RING_MAX_SIZE;
++ }
+ vmxnet3_ring_init(d, &s->rxq_descr[i].comp_ring, pa, size,
+ sizeof(struct Vmxnet3_RxCompDesc), true);
+ VMW_CFPRN("RXC queue %d: Base: %" PRIx64 ", Size: %d", i, pa, size);
+--
+2.29.2
+
+
+
diff --git a/gnu/packages/virtualization.scm b/gnu/packages/virtualization.scm
index 8da57cf..1f8c3be 100644
--- a/gnu/packages/virtualization.scm
+++ b/gnu/packages/virtualization.scm
@@ -141,7 +141,8 @@
(sha256
(base32
"1rd41wwlvp0vpialjp2czs6i3lsc338xc72l3zkbb7ixjfslw5y9"))
- (patches (search-patches "qemu-build-info-manual.patch"))
+ (patches (search-patches "qemu-build-info-manual.patch"
+ "qemu-CVE-2021-20203.patch"))
(modules '((guix build utils)))
(snippet
'(begin
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- branch master updated: gnu: qemu: Fix CVE-2021-20203.,
guix-commits <=