CVE-2019-11477
HIGHEPSS 100th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
References
- packetstormsecurity.com
- packetstormsecurity.com
- arubanetworks.com
- huawei.com
- openwall.com
- openwall.com
- openwall.com
- openwall.com
- openwall.com
- openwall.com
- vmware.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- cert-portal.siemens.com
- kb.pulsesecure.net
- kc.mcafee.com
- psirt.global.sonicwall.com
- security.netapp.com
- support.f5.com
- kb.cert.org
- oracle.com
- oracle.com
- synology.com
- us-cert.gov
Related Vulnerabilities
Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-16040 | Medium | 6.5 | 100% | - | Fix |
| CVE-2023-44443 | High | 7.8 | 94% | - | Fix |
| CVE-2014-0569 | High | 9.3 | 92% | - | - |
| CVE-2017-3599 | High | 7.5 | 90% | - | Fix |
| CVE-2023-21716 | Critical | 9.8 | 82% | - | Fix |
| CVE-2021-30860 | High | 7.8 | 76% | KEV | Fix |
Common questions
How do I fix CVE-2019-11477?
Published advisories record a fix for 74 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2019-11477 being actively exploited?
Not that we know of. CVE-2019-11477 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 98.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 100% of all scored CVEs.
How severe is CVE-2019-11477?
CVE-2019-11477 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2019-11477 affect?
Published advisories record a fix for linux (Debian), linux (Ubuntu), linux-aws (Ubuntu), linux-aws-hwe (Ubuntu), and 70 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2019-11477
Markdown
[](https://tridentstack.com/cve/CVE-2019-11477)HTML
<a href="https://tridentstack.com/cve/CVE-2019-11477"><img src="https://tridentstack.com/cve/badge/CVE-2019-11477.svg" alt="CVE-2019-11477"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.