CVE-2015-8539 is a privilege escalation and denial-of-service vulnerability affecting the Linux kernel's KEYS subsystem, specifically versions prior to 4.4, across various distributions including Canonical, SUSE, and generic Linux. It allows local attackers to gain privileges or cause a system crash through crafted keyctl commands that negatively instantiate a key. With a CVSS score of 7.8 (High), this vulnerability has a low attack complexity and requires local access, but can lead to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
12.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* | ||
14.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | ||
12CPE matchmatch criteria | cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:* | ||
< 4.4CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
4.4CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.