CVE-2019-11477
Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in…
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.
- Vendor
- linux
- Product
- linux kernel
- CVSS 3.1
- 7.5 (high), scored by NVD (primary)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.0
- 7.5 (high), scored by security@ubuntu.comCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-190
- Published
- 2019-06-19
- NVD modified
- 2026-06-17
- NVD status
- Modified
Not in the CISA KEV catalogue at the last update.
EPSS
98.7% chance of exploitation in the next 30 days (percentile 99th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
References
- packetstormsecurity.com (Third Party Advisory, VDB Entry)
- packetstormsecurity.com (Third Party Advisory, VDB Entry)
- www.arubanetworks.com (Third Party Advisory)
- www.huawei.com (Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.openwall.com (Mailing List, Third Party Advisory)
- www.vmware.com (Third Party Advisory)
- access.redhat.com (Third Party Advisory)
Data last updated 18 Oct 2026. Sources: NVD API 2.0, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.