dpdk: fix CVE-2024-11614scarthgap

An out-of-bounds read vulnerability was found in DPDK's Vhost
library checksum offload feature. This issue enables an
untrusted or compromised guest to crash the hypervisor's vSwitch
by forging Virtio descriptors to cause out-of-bounds reads. This
flaw allows an attacker with a malicious VM using a virtio driver
to cause the vhost-user side to crash by sending a packet with a
Tx checksum offload request and an invalid csum_start offset.

Reference:
https://security-tracker.debian.org/tracker/CVE-2024-11614

Upstream-patch:
https://git.dpdk.org/dpdk/commit/?id=4dc4e33ffa108e945fc8a1e2bbc7819791faa61e

Signed-off-by: Divya Chellam <divya.chellam@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

2 files changed, 47 insertions, 1 deletions

diff --git a/recipes-extended/dpdk/dpdk/CVE-2024-11614.patch b/recipes-extended/dpdk/dpdk/CVE-2024-11614.patch
new file mode 100644
index 0000000..1cf5507
--- /dev/null
+++ b/recipes-extended/dpdk/dpdk/CVE-2024-11614.patch
@@ -0,0 +1,44 @@
+From 4dc4e33ffa108e945fc8a1e2bbc7819791faa61e Mon Sep 17 00:00:00 2001
+From: Olivier Matz <olivier.matz@6wind.com>
+Date: Thu, 28 Nov 2024 12:09:56 +0100
+Subject: [PATCH] net/virtio: fix Rx checksum calculation
+
+If hdr->csum_start is larger than packet length, the len argument passed
+to rte_raw_cksum_mbuf() overflows and causes a segmentation fault.
+
+Ignore checksum computation in this case.
+
+CVE-2024-11614
+
+Fixes: ca7036b4af3a ("vhost: fix offload flags in Rx path")
+
+Signed-off-by: Maxime Gouin <maxime.gouin@6wind.com>
+Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
+Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
+
+CVE: CVE-2024-11614
+
+Upstream-Status: Backport [https://git.dpdk.org/dpdk/commit/?id=4dc4e33ffa108e945fc8a1e2bbc7819791faa61e]
+
+Signed-off-by: Divya Chellam <divya.chellam@windriver.com>
+---
+ lib/vhost/virtio_net.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
+index 895a79cf51..058b5842f2 100644
+--- a/lib/vhost/virtio_net.c
++++ b/lib/vhost/virtio_net.c
+@@ -2831,6 +2831,9 @@ vhost_dequeue_offload(struct virtio_net *dev, struct virtio_net_hdr *hdr,
+                         */
+                        uint16_t csum = 0, off;
+ 
++                       if (hdr->csum_start >= rte_pktmbuf_pkt_len(m))
++                               return;
++
+                        if (rte_raw_cksum_mbuf(m, hdr->csum_start,
+                                        rte_pktmbuf_pkt_len(m) - hdr->csum_start, &csum) < 0)
+                                return;
+-- 
+2.40.0
+
diff --git a/recipes-extended/dpdk/dpdk_23.11.1.bb b/recipes-extended/dpdk/dpdk_23.11.1.bb
index e7a0a23..4c6d234 100644
--- a/recipes-extended/dpdk/dpdk_23.11.1.bb
+++ b/recipes-extended/dpdk/dpdk_23.11.1.bb
@@ -1,6 +1,8 @@
 include dpdk.inc
 
-SRC_URI += " file://0001-config-meson-get-cpu_instruction_set-from-meson-opti.patch "
+SRC_URI += " file://0001-config-meson-get-cpu_instruction_set-from-meson-opti.patch \
+             file://CVE-2024-11614.patch \
+           "
 
 STABLE = "-stable"
 BRANCH = "23.11"