Medium severity · published Mar 7, 2018
CVE-2018-7740
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…
5.5
CVSS
0.6%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
through 4.15.7 · source: NVD
DL
Debian Linux · Debian
7.0; 8.0; 9.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04 · source: NVD
VH
Virtualization Host · Redhat
4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7740
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7740
Third Party Advisory
http://www.securityfocus.com/bid/103316
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3083
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3096
Exploit
https://bugzilla.kernel.org/show_bug.cgi?id=199037
Mailing List
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
Third Party Advisory
https://usn.ubuntu.com/3910-1/
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