diff options
| author |   Li Wang <li.wang@windriver.com> | 2020-12-08 02:34:48 +0000 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-01-03 08:57:57 +0000 |
| commit | cbc20b9d8d119bfd777f83432c760dcdb94f07f9 (patch) | |
| tree | c9ee0dfcd8f682c54a00e25a77061f02bd30e792 | |
| parent | 3a52f12bd08bd6f0e386c78f9f87acacdb7714cb (diff) | |
| download | openembedded-core-contrib-cbc20b9d8d119bfd777f83432c760dcdb94f07f9.tar.gz | |
qemu: CVE-2020-28916
References:
https://nvd.nist.gov/vuln/detail/CVE-2020-28916
backport patch from:
https://git.qemu.org/?p=qemu.git;a=commit;h=c2cb511634012344e3d0fe49a037a33b12d8a98a
Signed-off-by: Li Wang <li.wang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu.inc | 1 | ||||
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2020-28916.patch | 49 |
2 files changed, 50 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 0207de2637..4864d7e93c 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -36,6 +36,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2020-29129-CVE-2020-29130.patch \ file://CVE-2020-25624.patch \ file://CVE-2020-25723.patch \ + file://CVE-2020-28916.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-28916.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-28916.patch new file mode 100644 index 0000000000..5212196837 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-28916.patch @@ -0,0 +1,49 @@ +From c2cb511634012344e3d0fe49a037a33b12d8a98a Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Wed, 11 Nov 2020 18:36:36 +0530 +Subject: [PATCH] hw/net/e1000e: advance desc_offset in case of null +descriptor + +While receiving packets via e1000e_write_packet_to_guest() routine, +'desc_offset' is advanced only when RX descriptor is processed. And +RX descriptor is not processed if it has NULL buffer address. +This may lead to an infinite loop condition. Increament 'desc_offset' +to process next descriptor in the ring to avoid infinite loop. + +Reported-by: Cheol-woo Myung <330cjfdn@gmail.com> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Signed-off-by: Jason Wang <jasowang@redhat.com> + +Upstream-Status: Backport +CVE: CVE-2020-28916 +[https://git.qemu.org/?p=qemu.git;a=commit;h=c2cb511634012344e3d0fe49a037a33b12d8a98a] +Signed-off-by: Li Wang <li.wang@windriver.com> +--- + hw/net/e1000e_core.c | 8 ++++---- + 1 file changed, 4 insertions(+), 4 deletions(-) + +diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c +index bcd186c..d3e3cdc 100644 +--- a/hw/net/e1000e_core.c ++++ b/hw/net/e1000e_core.c +@@ -1596,13 +1596,13 @@ e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, + (const char *) &fcs_pad, e1000x_fcs_len(core->mac)); + } + } +- desc_offset += desc_size; +- if (desc_offset >= total_size) { +- is_last = true; +- } + } else { /* as per intel docs; skip descriptors with null buf addr */ + trace_e1000e_rx_null_descriptor(); + } ++ desc_offset += desc_size; ++ if (desc_offset >= total_size) { ++ is_last = true; ++ } + + e1000e_write_rx_descr(core, desc, is_last ? core->rx_pkt : NULL, + rss_info, do_ps ? ps_hdr_len : 0, &bastate.written); +-- +2.17.1 + |