Use After Free Affecting kernel-headers package, versions <0:3.10.0-862.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
95.39% (100th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELHEADERS-2525443
  • published10 Apr 2022
  • disclosed3 Jan 2018

Introduced: 3 Jan 2018

CVE-2017-18017  (opens in a new tab)
CWE-416  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Oracle:7 kernel-headers to version 0:3.10.0-862.el7 or higher.
This issue was patched in ELSA-2018-1062.

NVD Description

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

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

References

CVSS Scores

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