Improper privilege management in Linux kernel - CVE-2015-8539

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Main Vulnerability Database Vulnerabilities #VU92476

Improper privilege management in Linux kernel - CVE-2015-8539

Published: February 8, 2016 / Updated: January 31, 2022


Vulnerability identifier: #VU92476
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-8539
CWE-ID: CWE-269
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper privilege management error within the user_update() function in security/keys/user_defined.c, within the trusted_rcu_free() function in security/keys/trusted.c, within the encrypted_update() function in security/keys/encrypted-keys/encrypted.c. A local user can execute arbitrary code.


How to mitigate CVE-2015-8539

Install update from vendor's repository.

Sources