What is CVE-2019-11477?

CVE-2019-11477 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Integer Overflow flaw (CWE-190). CVE-2019-11477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-11477?

CVE-2019-11477 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2019-11477?

No patch is currently available for CVE-2019-11477. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-11477 actively exploited?

CVE-2019-11477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/190.html

CVE-2019-11477

High

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.

Package Linux Kernel

Published 2019-06-19

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-190

CVE-2019-11477 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2019-11477 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Packet Storm
http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.html

Third Party Advisory VDB Entry
Packet Storm
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html

Third Party Advisory VDB Entry
Arubanetworks
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt

Third Party Advisory
Huawei
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en

Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/06/20/3

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/06/28/2

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/07/06/3

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/07/06/4

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/10/24/1

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2019/10/29/3

Mailing List Third Party Advisory
Vmware
http://www.vmware.com/security/advisories/VMSA-2019-0010.html

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:1594

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:1602

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:1699

Third Party Advisory
Red Hat
https://access.redhat.com/security/vulnerabilities/tcpsack

Third Party Advisory
Cert-Portal
https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf

Third Party Advisory
Kb
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193

Third Party Advisory
Kc
https://kc.mcafee.com/corporate/index?page=content&id=SB10287

Third Party Advisory
Psirt
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0006

Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20190625-0001/

Third Party Advisory
Support
https://support.f5.com/csp/article/K78234183

Third Party Advisory
Ubuntu Security
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic

Mitigation Third Party Advisory
Kb
https://www.kb.cert.org/vuls/id/905115

Third Party Advisory US Government Resource
Oracle
https://www.oracle.com/security-alerts/cpujan2020.html

Third Party Advisory
Oracle
https://www.oracle.com/security-alerts/cpuoct2020.html

Third Party Advisory
Synology
https://www.synology.com/security/advisory/Synology_SA_19_28

Third Party Advisory
Us-Cert
https://www.us-cert.gov/ics/advisories/icsa-19-253-03

Third Party Advisory US Government Resource
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=3b4929f65b0d8249f19a50245cd88ed1a2f78cff
Patch
Kernel patch commit
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
Patch

Details

CVE ID CVE-2019-11477

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2019-06-19

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-11477?

CVE-2019-11477 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Integer Overflow flaw (CWE-190) . CVE-2019-11477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-11477?

CVE-2019-11477 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2019-11477?

No patch is currently available for CVE-2019-11477. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-11477 actively exploited?

No — CVE-2019-11477 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. View CWE-190 on MITRE CWE →