CVE-2019-11479

HIGH

7.5

CVSS Score

Published: June 18, 2019 at 11:34 PM UTC

Updated: June 17, 2026 at 02:12 AM UTC

21 products affected across 4 vendorsLinux KernelUbuntu LinuxEnterprise Linux

Using Linux kernel by Linux?

Get instant alerts when new vulnerabilities affect Linux kernel - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.5

Exploit prediction

EPSS 92%

Description

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. 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 commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux · Canonicalrubygems

95%

14.04 16.04 18.04 18.10 19.04

Big IP Access Policy Manager · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Advanced Firewall Manager · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Analytics · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Application Acceleration Manager · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Application Security Manager · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Domain Name System · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Edge Gateway · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Fraud Protection Service · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Big IP Global Traffic Manager · F5

95%

11.5.2 ≤ v < 11.6.5.112.1.0 ≤ v < 12.1.5.113.1.0 ≤ v < 13.1.3.214.0.0 ≤ v < 14.0.1.114.1.2 ≤ v < 14.1.2.115.0.0 ≤ v < 15.0.1.1

Affected range stops below 11.6.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.5.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.1.3.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.0.1.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (28)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

http://www.openwall.com/lists/oss-security/2019/06/28/2

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

http://www.openwall.com/lists/oss-security/2019/07/06/3

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

http://www.openwall.com/lists/oss-security/2019/07/06/4

VDB Entryx_refsource_BIDThird Party Advisory

Source: [email protected]

http://www.securityfocus.com/bid/108818

Vendor Advisoryx_refsource_REDHATThird Party Advisory

Source: [email protected]

https://access.redhat.com/errata/RHSA-2019:1594

Vendor Advisoryx_refsource_REDHATThird Party Advisory

Source: [email protected]

https://access.redhat.com/errata/RHSA-2019:1602

Vendor Advisoryx_refsource_REDHATThird Party Advisory

Source: [email protected]

https://access.redhat.com/errata/RHSA-2019:1699

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-405CWE-770

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card