CVE-2017-7518

MEDIUM

5.5

CVSS v3

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.

CWE-250 CWE-755

How to fix

Remediation Available

linuxDebian

Fixed in:4.11.11-1CVE-2017-7518

linuxUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-awsUbuntu

Fixed in:4.4.0-1016.16USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-1054.63USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-3.13.0-157-genericUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-generic-lpaeUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-lowlatencyUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-powerpc-e500Ubuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-powerpc-e500mcUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-powerpc-smpUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-powerpc64-embUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-3.13.0-157-powerpc64-smpUbuntu

Fixed in:3.13.0-157.207USN-3754-1

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-4.4.0-1016-awsUbuntu

Fixed in:4.4.0-1016.16USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

linux-image-4.4.0-1020-kvmUbuntu

Fixed in:4.4.0-1020.25USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-1054-awsUbuntu

Fixed in:4.4.0-1054.63USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-1086-raspi2Ubuntu

Fixed in:4.4.0-1086.94USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-1088-snapdragonUbuntu

Fixed in:4.4.0-1088.93USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-genericUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-generic-lpaeUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-lowlatencyUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-powerpc-e500mcUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-powerpc-smpUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-powerpc64-embUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-image-4.4.0-119-powerpc64-smpUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.4.0-119.143USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-kvmUbuntu

Fixed in:4.4.0-1020.25USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-lts-xenialUbuntu

Fixed in:4.4.0-119.143~14.04.1USN-3619-2

This Ubuntu release reached end-of-life on 2019-04-02.

linux-raspi2Ubuntu

Fixed in:4.4.0-1086.94USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

linux-snapdragonUbuntu

Fixed in:4.4.0-1088.93USN-3619-1

This Ubuntu release reached end-of-life on 2021-04-02.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

0.67%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Patch3

Third-Party Advisory9

Related Vulnerabilities

Other CWE-250 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-1222	High	8.6	64%	-	Fix
CVE-2025-12420	Critical	9.8	49%	-	Fix
CVE-2024-38813	High	7.5	17%	KEV	Fix
CVE-2026-29205	High	8.6	8.2%	-	Fix
CVE-2025-34515	Critical	9.8	7.4%	-	-
CVE-2019-16765	High	7.4	5.0%	-	Fix

Common questions

How do I fix CVE-2017-7518?

Published advisories record a fix for 27 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2017-7518 being actively exploited?

Not that we know of. CVE-2017-7518 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.67% is the estimated probability that it will be exploited in the next 30 days. That is higher than 50% of all scored CVEs.

How severe is CVE-2017-7518?

CVE-2017-7518 has a CVSS v3 base score of 5.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2017-7518 affect?

Published advisories record a fix for linux (Debian), linux (Ubuntu), linux-aws (Ubuntu), linux-image-3.13.0-157-generic (Ubuntu), and 23 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2017-7518

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.