CVE-2017-7518 — Execution with Unnecessary Privileges in Kernel
Severity
7.8HIGHNVD
CNA5.5
EPSS
0.1%
top 74.45%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 30
Latest updateMay 13
Description
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages5 packages
Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04, Enterprise Linux 7.0, 7.4, 7.5
Patches
🔴Vulnerability Details
4📋Vendor Advisories
5Debian▶
CVE-2017-7518: linux - A flaw was found in the Linux kernel before version 4.12 in the way the KVM modu...↗2017