diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/0003-fix-CVE-2016-7908.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/0003-fix-CVE-2016-7908.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/0003-fix-CVE-2016-7908.patch b/meta/recipes-devtools/qemu/qemu/0003-fix-CVE-2016-7908.patch new file mode 100644 index 0000000000..05cc3d9d13 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/0003-fix-CVE-2016-7908.patch @@ -0,0 +1,62 @@ +Upstream-Status: Backport + +Backport patch to fix CVE-2016-7908 from: + +http://git.qemu.org/?p=qemu.git;a=commit;h=070c4b92b8c + +CVE: CVE-2016-7908 + +Signed-off-by: Kai Kang <kai.kang@windriver.com> +--- +From 070c4b92b8cd5390889716677a0b92444d6e087a Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Thu, 22 Sep 2016 16:02:37 +0530 +Subject: [PATCH] net: mcf: limit buffer descriptor count + +ColdFire Fast Ethernet Controller uses buffer descriptors to manage +data flow to/fro receive & transmit queues. While transmitting +packets, it could continue to read buffer descriptors if a buffer +descriptor has length of zero and has crafted values in bd.flags. +Set upper limit to number of buffer descriptors. + +Reported-by: Li Qiang <liqiang6-s@360.cn> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> +Signed-off-by: Jason Wang <jasowang@redhat.com> +--- + hw/net/mcf_fec.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c +index 0ee8ad9..d31fea1 100644 +--- a/hw/net/mcf_fec.c ++++ b/hw/net/mcf_fec.c +@@ -23,6 +23,7 @@ do { printf("mcf_fec: " fmt , ## __VA_ARGS__); } while (0) + #define DPRINTF(fmt, ...) do {} while(0) + #endif + ++#define FEC_MAX_DESC 1024 + #define FEC_MAX_FRAME_SIZE 2032 + + typedef struct { +@@ -149,7 +150,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s) + uint32_t addr; + mcf_fec_bd bd; + int frame_size; +- int len; ++ int len, descnt = 0; + uint8_t frame[FEC_MAX_FRAME_SIZE]; + uint8_t *ptr; + +@@ -157,7 +158,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s) + ptr = frame; + frame_size = 0; + addr = s->tx_descriptor; +- while (1) { ++ while (descnt++ < FEC_MAX_DESC) { + mcf_fec_read_bd(&bd, addr); + DPRINTF("tx_bd %x flags %04x len %d data %08x\n", + addr, bd.flags, bd.length, bd.data); +-- +2.9.3 + |