diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2020-25723.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2020-25723.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-25723.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-25723.patch new file mode 100644 index 0000000000..90b3a2f41c --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-25723.patch @@ -0,0 +1,51 @@ +From 2fdb42d840400d58f2e706ecca82c142b97bcbd6 Mon Sep 17 00:00:00 2001 +From: Li Qiang <liq3ea@163.com> +Date: Wed, 12 Aug 2020 09:17:27 -0700 +Subject: [PATCH] hw: ehci: check return value of 'usb_packet_map' + +If 'usb_packet_map' fails, we should stop to process the usb +request. + +Signed-off-by: Li Qiang <liq3ea@163.com> +Message-Id: <20200812161727.29412-1-liq3ea@163.com> +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> + +Upstream-Status: Backport +CVE: CVE-2020-25723 +[https://git.qemu.org/?p=qemu.git;a=commit;h=2fdb42d840400d58f2e706ecca82c142b97bcbd6] +Signed-off-by: Li Wang <li.wang@windriver.com> +--- + hw/usb/hcd-ehci.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c +index 1495e8f..1fbb02a 100644 +--- a/hw/usb/hcd-ehci.c ++++ b/hw/usb/hcd-ehci.c +@@ -1373,7 +1373,10 @@ static int ehci_execute(EHCIPacket *p, const char *action) + spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0); + usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd, + (p->qtd.token & QTD_TOKEN_IOC) != 0); +- usb_packet_map(&p->packet, &p->sgl); ++ if (usb_packet_map(&p->packet, &p->sgl)) { ++ qemu_sglist_destroy(&p->sgl); ++ return -1; ++ } + p->async = EHCI_ASYNC_INITIALIZED; + } + +@@ -1452,7 +1455,10 @@ static int ehci_process_itd(EHCIState *ehci, + if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) { + usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false, + (itd->transact[i] & ITD_XACT_IOC) != 0); +- usb_packet_map(&ehci->ipacket, &ehci->isgl); ++ if (usb_packet_map(&ehci->ipacket, &ehci->isgl)) { ++ qemu_sglist_destroy(&ehci->isgl); ++ return -1; ++ } + usb_handle_packet(dev, &ehci->ipacket); + usb_packet_unmap(&ehci->ipacket, &ehci->isgl); + } else { +-- +2.17.1 + |