PT-2017-7806 · Linux+5 · Linux Kernel+5

Ralf Spenneberg · Published 2017-02-06 · Updated 2018-08-24 · CVE-2016-10208

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.9.8

Description The issue is related to the ext4 fill super function in the Linux kernel, which does not properly validate meta block groups. This allows physically proximate attackers to cause a denial of service, resulting in an out-of-bounds read and system crash, via a crafted ext4 image.

Recommendations For versions prior to 4.9.8, update to version 4.9.8 or later to resolve the issue. As a temporary workaround, consider restricting access to untrusted ext4 images to minimize the risk of exploitation.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2017-1152

ALT-PU-2017-1330

CESA-2017_1308

CVE-2016-10208

DLA-1200-1

MGASA-2017-0063

MGASA-2017-0064

MGASA-2017-0065

OPENSUSE-SU-2017_0906-1

RHSA-2017:1297

RHSA-2017:1298

RHSA-2017:1308

RHSA-2017_1298

RHSA-2017_1308

SUSE-SU-2017:1247-1

SUSE-SU-2017:1360-1

USN-3234-1

USN-3234-2

USN-3361-1

USN-3754-1

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 272

• https://github.com/torvalds/linux/commit/3a4b77cd47bb837b8557595ec7425f281f2ca1fe · Patch
• https://ubuntu.com/security/CVE-2018-13094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16536 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3754-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16537 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16535 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1395190 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2016-10208 · Security Note
• http://openwall.com/lists/oss-security/2017/02/05/3 · Patch
• https://ubuntu.com/security/CVE-2017-7889 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3361-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16643 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13405 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9604 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5546 · Vendor Advisory