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Servers and applications

CVE-2019-11477

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.

Severity
High 7.5
Published
19 Jun 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
99% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_access_policy_manager
  • From 11.5.2 up to 11.6.4
  • From 12.1.0 up to 12.1.4
  • From 13.1.0 up to 13.1.1
  • From 14.0.0 up to 14.1.0
  • Version 15.0.0
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • From 11.5.2 up to 11.6.4
  • From 12.1.0 up to 12.1.4
  • From 13.1.0 up to 13.1.1
  • From 14.0.0 up to 14.1.0
  • Version 15.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-11477
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-11477