CVE-2017-7495

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2

http://www.openwall.com/lists/oss-security/2017/05/15/2

http://www.securityfocus.com/bid/98491

https://bugzilla.redhat.com/show_bug.cgi?id=1450261

https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824

https://source.android.com/security/bulletin/2017-09-01

Details

Source: MITRE

Published: 2017-05-15

Updated: 2017-09-09

Type: CWE-200

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.6.1 (inclusive)

Tenable Plugins

View all (14 total)

IDNameProductFamilySeverity
129990Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4823)NessusOracle Linux Local Security Checks
medium
129986OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0047)NessusOracleVM Local Security Checks
medium
124827EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1504)NessusHuawei Local Security Checks
critical
124810EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1486)NessusHuawei Local Security Checks
high
103046RHEL 6 : MRG (RHSA-2017:2669)NessusRed Hat Local Security Checks
high
102820Ubuntu 14.04 LTS : linux vulnerabilities (USN-3406-1)NessusUbuntu Local Security Checks
high
102819Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3405-2)NessusUbuntu Local Security Checks
high
102818Ubuntu 16.04 LTS : linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities (USN-3405-1)NessusUbuntu Local Security Checks
high
102734CentOS 7 : kernel (CESA-2017:1842) (Stack Clash)NessusCentOS Local Security Checks
high
102281Oracle Linux 7 : kernel (ELSA-2017-1842)NessusOracle Linux Local Security Checks
high
102151RHEL 7 : kernel-rt (RHSA-2017:2077)NessusRed Hat Local Security Checks
high
102143RHEL 7 : kernel (RHSA-2017:1842) (Stack Clash)NessusRed Hat Local Security Checks
high
101853EulerOS 2.0 SP2 : kernel (EulerOS-SA-2017-1123)NessusHuawei Local Security Checks
high
101852EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1122)NessusHuawei Local Security Checks
high