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CVE-2019-11477

Integer overflow in TCP_SKB_CB(skb)->tcp_gso_segs

HIGH
7.5
CVSS Score
Published: June 18, 2019 at 11:34 PM UTC
Updated: June 17, 2026 at 02:12 AM UTC
24 products affected across 6 vendorsLinux KernelUbuntu LinuxEnterprise Linux

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Severity
HIGH7.5
Exploit prediction
EPSS 99%

Description

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.

Affected

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

Ubuntu Linux· Canonicalrubygems
95%
12.0414.0416.0418.0418.1019.04
Big IP Access Policy Manager· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Advanced Firewall Manager· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Analytics· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Application Acceleration Manager· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Application Security Manager· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Domain Name System· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Edge Gateway· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Fraud Protection Service· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0
Big IP Global Traffic Manager· F5
95%
11.5.2 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.0 ≤ v ≤ 14.1.015.0.0

References (29)

x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.html
x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2019/06/20/3
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

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-190

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