a0f61528af
CVE-2016-7909: pcnet: Infinite loop in pcnet_rdra_addr (bz #1381196) CVE-2016-7994: virtio-gpu: memory leak in resource_create_2d (bz #1382667) CVE-2016-8577: 9pfs: host memory leakage in v9fs_read (bz #1383286) CVE-2016-8578: 9pfs: potential NULL dereferencein 9pfs routines (bz #1383292) CVE-2016-8668: OOB buffer access in rocker switch emulation (bz #1384898) CVE-2016-8669: divide by zero error in serial_update_parameters (bz #1384911) CVE-2016-8909: intel-hda: infinite loop in dma buffer stream (bz #1388053) Infinite loop vulnerability in a9_gtimer_update (bz #1388300) CVE-2016-9101: eepro100: memory leakage at device unplug (bz #1389539) CVE-2016-9103: 9pfs: information leakage via xattr (bz #1389643) CVE-2016-9102: 9pfs: memory leakage when creating extended attribute (bz #1389551) CVE-2016-9104: 9pfs: integer overflow leading to OOB access (bz #1389687) CVE-2016-9105: 9pfs: memory leakage in v9fs_link (bz #1389704) CVE-2016-9106: 9pfs: memory leakage in v9fs_write (bz #1389713) CVE-2016-9381: xen: incautious about shared ring processing (bz #1397385) CVE-2016-9921: Divide by zero vulnerability in cirrus_do_copy (bz #1399054) CVE-2016-9776: infinite loop while receiving data in mcf_fec_receive (bz #1400830) CVE-2016-9845: information leakage in virgl_cmd_get_capset_info (bz #1402247) CVE-2016-9846: virtio-gpu: memory leakage while updating cursor data (bz #1402258) CVE-2016-9907: usbredir: memory leakage when destroying redirector (bz #1402266) CVE-2016-9911: usb: ehci: memory leakage in ehci_init_transfer (bz #1402273) CVE-2016-9913: 9pfs: memory leakage via proxy/handle callbacks (bz #1402277) CVE-2016-10028: virtio-gpu-3d: OOB access while reading virgl capabilities (bz #1406368) CVE-2016-9908: virtio-gpu: information leakage in virgl_cmd_get_capset (bz #1402263) CVE-2016-9912: virtio-gpu: memory leakage when destroying gpu resource (bz #1402285)
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From: Prasad J Pandit <pjp@fedoraproject.org>
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Date: Wed, 12 Oct 2016 11:28:08 +0530
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Subject: [PATCH] char: serial: check divider value against baud base
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16550A UART device uses an oscillator to generate frequencies
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(baud base), which decide communication speed. This speed could
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be changed by dividing it by a divider. If the divider is
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greater than the baud base, speed is set to zero, leading to a
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divide by zero error. Add check to avoid it.
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Reported-by: Huawei PSIRT <psirt@huawei.com>
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Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
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Message-Id: <1476251888-20238-1-git-send-email-ppandit@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 3592fe0c919cf27a81d8e9f9b4f269553418bb01)
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---
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hw/char/serial.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/hw/char/serial.c b/hw/char/serial.c
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index 3442f47..eec72b7 100644
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--- a/hw/char/serial.c
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+++ b/hw/char/serial.c
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@@ -153,8 +153,9 @@ static void serial_update_parameters(SerialState *s)
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int speed, parity, data_bits, stop_bits, frame_size;
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QEMUSerialSetParams ssp;
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- if (s->divider == 0)
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+ if (s->divider == 0 || s->divider > s->baudbase) {
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return;
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+ }
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/* Start bit. */
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frame_size = 1;
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