CVE-2015-8539

Advisory lineage Upstream: 0 Downstream: 24
Modified
Published: 08 Feb 2016, 02:00
Last modified:06 Aug 2024, 08:20

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.08% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Feb 2016, 02:00
Published
Vulnerability first disclosed
06 Aug 2024, 08:20
Last Modified
Vulnerability information updated

Description

The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.08%• Percentile: 23%

Techniques & Countermeasures

  • CWE-269•Improper Privilege Management

    The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04

  • linux•linux_kernel

    < 4.4 | 4.4:rc1 | 4.4:rc2

  • suse•linux_enterprise_real_time_extension

    12:sp1

References (24)