CVE-2019-11478
MEDIUMEPSS 100th pctlDescription
Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. 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 f070ef2ac66716357066b683fb0baf55f8191a2e.
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
References
- packetstormsecurity.com
- packetstormsecurity.com
- arubanetworks.com
- openwall.com
- openwall.com
- openwall.com
- openwall.com
- openwall.com
- vmware.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- cert-portal.siemens.com
- kc.mcafee.com
- psirt.global.sonicwall.com
- seclists.org
- security.netapp.com
- kb.cert.org
- oracle.com
- oracle.com
- synology.com
- us-cert.gov
Related Vulnerabilities
Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-50387 | High | 7.5 | 100% | - | Fix |
| CVE-2019-11479 | High | 7.5 | 92% | - | Fix |
| CVE-2024-27316 | High | 7.5 | 91% | - | Fix |
| CVE-2022-30522 | High | 7.5 | 90% | - | Fix |
| CVE-2019-9515 | High | 7.5 | 87% | - | Fix |
| CVE-2024-28182 | Medium | 5.3 | 85% | - | Fix |
Common questions
How do I fix CVE-2019-11478?
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-2019-11478 being actively exploited?
Not that we know of. CVE-2019-11478 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 94.7% 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-2019-11478?
CVE-2019-11478 has a CVSS v3 base score of 5.3, rated medium. 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-2019-11478 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-2019-11478
Markdown
[](https://tridentstack.com/cve/CVE-2019-11478)HTML
<a href="https://tridentstack.com/cve/CVE-2019-11478"><img src="https://tridentstack.com/cve/badge/CVE-2019-11478.svg" alt="CVE-2019-11478"></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.