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Use After Free Affecting kernel-uek-debug package, versions <0:2.6.39-400.294.1.el5uek

Severity

high

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-ORACLE5-KERNELUEKDEBUG-2520871
  • published 10 Apr 2022
  • disclosed 16 Oct 2016
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Introduced: 16 Oct 2016

CVE-2016-6828 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Oracle:5 kernel-uek-debug to version 0:2.6.39-400.294.1.el5uek or higher.
This issue was patched in ELSA-2017-3510.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:5 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

CVSS Scores

version 3.1
Expand this section

Snyk

5.5 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
Expand this section

NVD

5.5 medium
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Red Hat

4.4 medium