CVE-2018-7740: Buffer Overflow
Last updated 4 July 2026
Other sources
The resvmaprelease 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 remapfilepages system call.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.8-1Fixed in 7.1.8-2
Event History
Frequently Asked Questions
What is the severity of CVE-2018-7740?
CVE-2018-7740 has a severity rating that can lead to a denial of service, making it a significant concern for affected systems.
How do I fix CVE-2018-7740?
To fix CVE-2018-7740, users should update their systems to versions of the Linux kernel beyond 4.15.7 or install the appropriate patches provided by their distribution.
Which software is affected by CVE-2018-7740?
CVE-2018-7740 affects various versions of the Linux kernel, Red Hat virtualization host, and specific versions of Ubuntu and Debian Linux.
Can CVE-2018-7740 be exploited remotely?
No, CVE-2018-7740 is a local vulnerability that requires local user access to exploit.
What are the potential consequences of CVE-2018-7740?
The exploitation of CVE-2018-7740 can lead to a denial of service, potentially crashing the system or causing instability.