CVE-2017-1000380

kernel: information leak due to a data race in ALSA timer

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

sound/core/timer.c in the Linux kernel before 4.11.5 is vulnerable to a data race in the ALSA /dev/snd/timer driver resulting in local users being able to read information belonging to other users, i.e., uninitialized memory contents may be disclosed when a read and an ioctl happen at the same time.

El archivo sound/core/timer.c en el kernel de Linux anterior a versión 4.11.5, es vulnerable a una carrera de datos en el controlador de /dev/snd/timer de ALSA, resultando en que los usuarios locales sean capaces de leer la información que pertenece a otros usuarios, es decir, los contenidos de la memoria sin inicializar pueden ser divulgados cuando una lectura y un ioctl se presentan al mismo tiempo.

It was found that the timer functionality in the Linux kernel ALSA subsystem is prone to a race condition between read and ioctl system call handlers, resulting in an uninitialized memory disclosure to user space. A local user could use this flaw to read information belonging to other users.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-06-13 CVE Reserved
2017-06-17 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (14)

URL	Tag	Source
http://www.securityfocus.com/bid/99121	Third Party Advisory
https://source.android.com/security/bulletin/pixel/2017-12-01	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ba3021b2c79b2fa9114f92790a99deb27a65b728	2017-12-06
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d11662f4f798b50d8c8743f433842c3e40fe3378	2017-12-06
http://www.openwall.com/lists/oss-security/2017/06/12/2	2017-12-06
https://github.com/torvalds/linux/commit/ba3021b2c79b2fa9114f92790a99deb27a65b728	2017-12-06
https://github.com/torvalds/linux/commit/d11662f4f798b50d8c8743f433842c3e40fe3378	2017-12-06

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3981	2017-12-06
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.5	2017-12-06
https://access.redhat.com/errata/RHSA-2017:3295	2017-12-06
https://access.redhat.com/errata/RHSA-2017:3315	2017-12-06
https://access.redhat.com/errata/RHSA-2017:3322	2017-12-06
https://access.redhat.com/security/cve/CVE-2017-1000380	2017-11-30
https://bugzilla.redhat.com/show_bug.cgi?id=1463311	2017-11-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.11.4 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.11.4"		-		Affected