CVE-2019-12817

HIGH

Linux Kernel < 5.1.15 - Out-of-bounds Write in PowerPC MMU Context Handling

Title source: llm
STIX 2.1

Description

arch/powerpc/mm/mmu_context_book3s64.c in the Linux kernel before 5.1.15 for powerpc has a bug where unrelated processes may be able to read/write to one another's virtual memory under certain conditions via an mmap above 512 TB. Only a subset of powerpc systems are affected.

References (13)

Core 13
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4031-1/
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/06/24/5
Broken Link vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/108884
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4495
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/13
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K12876166
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2703

Scores

CVSS v3 7.0
EPSS 0.0006
EPSS Percentile 19.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (17)
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
canonical/ubuntu_linux 19.04
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 29
fedoraproject/fedora 30
linux/linux_kernel < 5.1.15
opensuse/leap 15.1
redhat/enterprise_linux 8.0
... and 7 more
Published Jun 25, 2019
Tracked Since Feb 18, 2026