What’s Vulnerable › Vulnerabilities

CVE-2018-7740

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-03-07 · updated 2026-06-17
• Weakness: CWE-119

Description

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.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04
• Debian Linux: 7.0, 8.0, 9.0
• Linux kernel: through 4.15.7
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Workstation: 7.0
• RedHat Virtualization Host: 4.0

References

• http://www.securityfocus.com/bid/103316
• https://access.redhat.com/errata/RHSA-2018:3083
• https://access.redhat.com/errata/RHSA-2018:3096
• https://bugzilla.kernel.org/show_bug.cgi?id=199037
• https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
• https://usn.ubuntu.com/3910-1/
• https://usn.ubuntu.com/3910-2/
• https://www.debian.org/security/2018/dsa-4187
• https://www.debian.org/security/2018/dsa-4188
• http://www.securityfocus.com/bid/103316
• https://access.redhat.com/errata/RHSA-2018:3083
• https://access.redhat.com/errata/RHSA-2018:3096

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