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Use After Free Affecting kernel-uek-devel package, versions <0:4.1.12-61.1.25.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-2518656
  • published10 Apr 2022
  • disclosed16 Oct 2016
Report a new vulnerability Found a mistake?

Introduced: 16 Oct 2016

CVE-2016-6828  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-devel to version 0:4.1.12-61.1.25.el7uek or higher.
This issue was patched in ELSA-2017-3508.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.

References