Integer Overflow or Wraparound Affecting kernel-kdump package, versions <0:2.6.32-754.15.3.el6


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
97.17% (100th percentile)

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  • Snyk IDSNYK-CENTOS6-KERNELKDUMP-2155500
  • published26 Jul 2021
  • disclosed17 Jun 2019

Introduced: 17 Jun 2019

CVE-2019-11477  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Centos:6 kernel-kdump to version 0:2.6.32-754.15.3.el6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-kdump package and not the kernel-kdump package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.

References

CVSS Scores

version 3.1