What is CVE-2018-7740?

CVE-2018-7740 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2018-7740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2018-7740?

CVE-2018-7740 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2018-7740?

No patch is currently available for CVE-2018-7740. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2018-7740 actively exploited?

CVE-2018-7740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2018-7740

Medium

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

Package Linux Kernel

Published 2018-03-07

Last modified 2024-11-21

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-119

CVE-2018-7740 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2018-7740 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Securityfocus
http://www.securityfocus.com/bid/103316

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2018:3083

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:3096

Third Party Advisory
Kernel.org
https://bugzilla.kernel.org/show_bug.cgi?id=199037

Exploit Issue Tracking Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html

Mailing List Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3910-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3910-2/

Third Party Advisory
Debian Security
https://www.debian.org/security/2018/dsa-4187

Third Party Advisory
Debian Security
https://www.debian.org/security/2018/dsa-4188

Third Party Advisory

Details

CVE ID CVE-2018-7740

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2018-03-07

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2018-7740?

CVE-2018-7740 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2018-7740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2018-7740?

CVE-2018-7740 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2018-7740?

No patch is currently available for CVE-2018-7740. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2018-7740 actively exploited?

No — CVE-2018-7740 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →