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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-3981-1 linux security update
EUVD EUVD EUVD-2017-16535 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.
Ubuntu USN Ubuntu USN USN-3619-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3619-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3754-1 Linux kernel vulnerabilities
Fixes

Solution

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-05T16:04:11.892Z

Reserved: 2017-04-05T00:00:00

Link: CVE-2017-7518

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-07-30T15:29:00.560

Modified: 2024-11-21T03:32:03.680

Link: CVE-2017-7518

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-06-22T00:00:00Z

Links: CVE-2017-7518 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses