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NULL Pointer Dereference Affecting kernel-uek package, versions <0:4.1.12-124.26.7.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.79% (82nd percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-2545111
  • published10 Apr 2022
  • disclosed2 Mar 2018
Report a new vulnerability Found a mistake?

Introduced: 2 Mar 2018

CVE-2018-1066  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:4.1.12-124.26.7.el7uek or higher.
This issue was patched in ELSA-2019-4596.

NVD Description

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