Use after free in Linux kernel - CVE-2020-27835

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Main Vulnerability Database Vulnerabilities #VU92765

Use after free in Linux kernel - CVE-2020-27835

Published: January 7, 2021 / Updated: January 14, 2021


Vulnerability identifier: #VU92765
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-27835
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

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

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.


Remediation

Install update from vendor's repository.

External links