Use After Free Affecting kernel-uek package, versions <0:3.8.13-118.29.1.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
91.09% (100th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-2531300
  • 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)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:3.8.13-118.29.1.el7uek or higher.
This issue was patched in ELSA-2019-4316.

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 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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