Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.15.7 |
| Redhat | Virtualization Host | 4.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Debian | Debian Linux | 7.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103316Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=199037ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/3910-1/Third Party Advisory
- https://usn.ubuntu.com/3910-2/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
- https://www.debian.org/security/2018/dsa-4188Third Party Advisory
- http://www.securityfocus.com/bid/103316Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=199037ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/3910-1/Third Party Advisory
FAQ
What is CVE-2018-7740?
CVE-2018-7740 is a vulnerability with a CVSS score of 5.5 (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 ...
How severe is CVE-2018-7740?
CVE-2018-7740 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-7740?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Virtualization Host, Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop.