Red Hat update for Linux Kernel

Published: 2017-08-16 15:42:19 | Updated: 2017-08-16 15:45:06
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2017-7533
CVSSv3 8.4 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CWE ID CWE-362
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Red Hat Enterprise Linux
Vulnerable software versions Red Hat Enterprise Linux 7
Vendor URL Red Hat Inc.

Security Advisory

1) Race condition

Description

The vulnerability allows a local user to execute arbitrary code with escalated privileges.

The vulnerability exists due to a race condition in the fsnotify implementation in the Linux kernel through 4.12.4. A local user can create an application, which leverages simultaneous execution of the inotify_handle_event and vfs_rename functions and trigger memory corruption and denials of service attack or execute arbitrary code on the target system with root privileges.

Successful exploitation of this vulnerability may allow a local user to obtain elevated privileges on the system.

Note: this vulnerability is being active exploited in the wild for 32-bit systems in August 2017.

Remediation

Install update from vendor's website.

External links

https://access.redhat.com/errata/RHSA-2017:2473

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