diff options
Diffstat (limited to 'gnu/packages/patches/qemu-CVE-2017-5898.patch')
| -rw-r--r-- | gnu/packages/patches/qemu-CVE-2017-5898.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2017-5898.patch b/gnu/packages/patches/qemu-CVE-2017-5898.patch new file mode 100644 index 0000000000..5a94bb1ae4 --- /dev/null +++ b/gnu/packages/patches/qemu-CVE-2017-5898.patch @@ -0,0 +1,44 @@ +Fix CVE-2017-5898 (integer overflow in emulated_apdu_from_guest): + +http://seclists.org/oss-sec/2017/q1/328 +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5898 + +Patch copied from upstream source repository: + +http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=c7dfbf322595ded4e70b626bf83158a9f3807c6a + +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 89e11b68c4..1325ea1659 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"); +-- +2.11.1 + |