PT-2019-2417 · Linux+7 · Linux Kernel+7
Jonathan Looney
·
Published
2019-05-18
·
Updated
2024-12-20
·
CVE-2019-11478
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.4.182
Linux kernel versions prior to 4.9.182
Linux kernel versions prior to 4.14.127
Linux kernel versions prior to 4.19.52
Linux kernel versions prior to 5.1.11
Description
The issue is related to the TCP retransmission queue implementation in the Linux kernel when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could exploit this to cause a denial of service by sending a specially crafted sequence of SACK packets, leading to resource exhaustion.
Recommendations
For Linux kernel versions prior to 4.4.182, update to version 4.4.182 or later.
For Linux kernel versions prior to 4.9.182, update to version 4.9.182 or later.
For Linux kernel versions prior to 4.14.127, update to version 4.14.127 or later.
For Linux kernel versions prior to 4.19.52, update to version 4.19.52 or later.
For Linux kernel versions prior to 5.1.11, update to version 5.1.11 or later.
Exploit
Fix
DoS
Allocation of Resources Without Limits
Resource Exhaustion
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Related Identifiers
Affected Products
Alt Linux
Centos
Check Point Gaia
Linux Kernel
Red Hat
Suse
Ubuntu
Vmware Vcenter