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NULL Pointer Dereference Affecting kernel package, versions <0:4.9.93-41.60.amzn1

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.67% (81st percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1712863
  • published27 Sept 2021
  • 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 Amazon-Linux:2018.03 kernel to version 0:4.9.93-41.60.amzn1 or higher.
This issue was patched in ALAS-2018-993.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 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.