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symantecSymantec Security ResponseSMNTC-111032
HistoryNov 29, 2019 - 12:00 a.m.

Linux kernel CVE-2019-19377 Use After Free Denial of Service Vulnerability

Symantec Security Response

0.002 Low





Linux kernel is prone to a denial-of-service vulnerability. An attacker can exploit this issue to cause denial-of-service conditions. Linux kernel version 5.0.21 is vulnerable.

Technologies Affected

  • Linux kernel 5.0.21


Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.
Allow only trusted individuals to have user accounts and local access to the resources.

Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

linux kerneleq5.0.21