diff options
Diffstat (limited to 'main/qemu/CVE-2017-5898.patch')
| -rwxr-xr-x | main/qemu/CVE-2017-5898.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/main/qemu/CVE-2017-5898.patch b/main/qemu/CVE-2017-5898.patch new file mode 100755 index 0000000000..67bd4d65b3 --- /dev/null +++ b/main/qemu/CVE-2017-5898.patch @@ -0,0 +1,35 @@ +From c7dfbf322595ded4e70b626bf83158a9f3807c6a Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Fri, 3 Feb 2017 00:52:28 +0530 +Subject: [PATCH] usb: ccid: check ccid apdu length + +CCID device emulator uses Application Protocol Data Units(APDU) +to exchange command and responses to and from the host. +The length in these units couldn't be greater than 65536. Add +check to ensure the same. It'd also avoid potential integer +overflow in emulated_apdu_from_guest. + +Reported-by: Li Qiang <liqiang6-s@360.cn> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Message-id: 20170202192228.10847-1-ppandit@redhat.com +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> +--- + hw/usb/dev-smartcard-reader.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c +index 89e11b6..1325ea1 100644 +--- a/hw/usb/dev-smartcard-reader.c ++++ b/hw/usb/dev-smartcard-reader.c +@@ -967,7 +967,7 @@ static void ccid_on_apdu_from_guest(USBCCIDState *s, CCID_XferBlock *recv) + DPRINTF(s, 1, "%s: seq %d, len %d\n", __func__, + recv->hdr.bSeq, len); + ccid_add_pending_answer(s, (CCID_Header *)recv); +- if (s->card) { ++ if (s->card && len <= BULK_OUT_DATA_SIZE) { + ccid_card_apdu_from_guest(s->card, recv->abData, len); + } else { + DPRINTF(s, D_WARN, "warning: discarded apdu\n"); +-- +1.8.3.1 + |