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


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
97.17% (100th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELDEBUG-2535445
  • published10 Apr 2022
  • disclosed19 Jun 2019

Introduced: 19 Jun 2019

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

How to fix?

Upgrade Oracle:6 kernel-debug to version 0:2.6.32-754.15.3.el6 or higher.
This issue was patched in ELSA-2019-1488.

NVD Description

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