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NULL Pointer Dereference Affecting kernel-debug package, versions <0:3.10.0-862.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.67% (81st percentile)

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  • Snyk ID SNYK-RHEL7-KERNELDEBUG-4854464
  • published 26 Jul 2021
  • disclosed 20 Oct 2014
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Introduced: 20 Oct 2014

CVE-2018-1066 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-debug to version 0:3.10.0-862.el7 or higher.
This issue was patched in RHSA-2018:1062.

NVD Description

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

The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.