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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3083 | third party advisory vendor advisory |
| https://www.debian.org/security/2018/dsa-4187 | third party advisory vendor advisory |
| https://usn.ubuntu.com/3910-1/ | third party advisory vendor advisory |
| https://www.debian.org/security/2018/dsa-4188 | third party advisory vendor advisory |
| https://usn.ubuntu.com/3910-2/ | third party advisory vendor advisory |
| https://bugzilla.kernel.org/show_bug.cgi?id=199037 | issue tracking exploit third party advisory |
| http://www.securityfocus.com/bid/103316 | vdb entry third party advisory |
| https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html | third party advisory mailing list |
| https://access.redhat.com/errata/RHSA-2018:3096 | third party advisory vendor advisory |