CVE-2018-17182

HIGH

Description

An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2

http://www.securityfocus.com/bid/105417

http://www.securityfocus.com/bid/106503

http://www.securitytracker.com/id/1041748

https://access.redhat.com/errata/RHSA-2018:3656

https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2

https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html

https://security.netapp.com/advisory/ntap-20190204-0001/

https://usn.ubuntu.com/3776-1/

https://usn.ubuntu.com/3776-2/

https://usn.ubuntu.com/3777-1/

https://usn.ubuntu.com/3777-2/

https://usn.ubuntu.com/3777-3/

https://www.debian.org/security/2018/dsa-4308

https://www.exploit-db.com/exploits/45497/

https://www.openwall.com/lists/oss-security/2018/09/18/4

Details

Source: MITRE

Published: 2018-09-19

Updated: 2019-03-05

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH