Memory leak in Linux kernel - CVE-2019-9857

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Main Vulnerability Database Vulnerabilities #VU90490

Memory leak in Linux kernel - CVE-2019-9857

Published: March 21, 2019 / Updated: August 24, 2020


Vulnerability identifier: #VU90490
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-9857
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the destroy_super_work() function in fs/super.c, within the fsnotify_sb_delete() function in fs/notify/fsnotify.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Fedora
kernel
kernel-headers
kernel-tools

How to mitigate CVE-2019-9857

Install update from vendor's website.

kernel - addressed in versions 5.0.6-100.fc28, 5.0.6-200.fc29, 5.0.6-300.fc30
kernel-headers - addressed in versions 5.0.6-100.fc28, 5.0.6-200.fc29, 5.0.6-300.fc30
kernel-tools - addressed in versions 5.0.6-100.fc28, 5.0.6-200.fc29, 5.0.6-300.fc30

External References

Related Security Bulletins