CVE-2018-17182 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8