CVE-2019-11477

CVE Details

Release Date:

2019-06-18

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.

See more information about CVE-2019-11477 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	7.5	Base Metrics:	AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector:	Network	Attack Complexity:	Low
Privileges Required:	None	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel-uek)	ELSA-2019-4689	2019-06-17
Oracle Linux version 6 (dtrace-modules-3.8.13-118.35.2.el6uek)	ELSA-2019-4686	2019-06-17
Oracle Linux version 6 (kernel)	ELSA-2019-1488	2019-06-18
Oracle Linux version 6 (kernel-uek)	ELSA-2019-4684	2019-06-17
Oracle Linux version 6 (kernel-uek)	ELSA-2019-4686	2019-06-17
Oracle Linux version 6 (kernel-uek)	ELSA-2019-4689	2019-06-17
Oracle Linux version 7 (dtrace-modules-3.8.13-118.35.2.el7uek)	ELSA-2019-4686	2019-06-17
Oracle Linux version 7 (kernel)	ELSA-2019-1481	2019-06-18
Oracle Linux version 7 (kernel-uek)	ELSA-2019-4684	2019-06-17
Oracle Linux version 7 (kernel-uek)	ELSA-2019-4685	2019-06-17
Oracle Linux version 7 (kernel-uek)	ELSA-2019-4686	2019-06-17
Oracle Linux version 8 (kernel)	ELSA-2019-1479	2019-07-30
Oracle VM version 3.4 (kernel-uek)	OVMSA-2019-0026	2019-06-17

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team