PT-2017-17770 · Linux+4 · Linux Kernel+4

Huang Weller · Published 2016-06-22 · Updated 2023-02-12 · CVE-2017-7495

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.6.2

Description The issue allows local users to obtain sensitive information from other users' files under specific circumstances. This can happen when the ext4 data=ordered mode is used and a needs-flushing-before-commit list is mishandled. The exploitation involves waiting for a hardware reset, creating a new file, making write system calls, and then reading this file.

Recommendations For Linux kernel versions prior to 4.6.2, update to version 4.6.2 or later to resolve the issue.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

ALT-PU-2016-1634

ALT-PU-2017-1330

CESA-2017_1842

CVE-2017-7495

RHSA-2017:1842

RHSA-2017:2077

RHSA-2017:2669

RHSA-2017_1842

RHSA-2017_2077

USN-3405-1

USN-3405-2

USN-3406-1

USN-3406-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Ubuntu

References · 30

• https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824 · Patch
• https://osv.dev/vulnerability/USN-3405-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7616 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-7495 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2019-4823.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7541 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7495 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3405-2 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-7495 · Security Note
• https://ubuntu.com/security/CVE-2017-7273 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-7495 · Vendor Advisory
• http://openwall.com/lists/oss-security/2017/05/15/2 · Patch
• https://ubuntu.com/security/CVE-2017-7261 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-7495 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-7495 · Security Note