CVE-2019-12817

Name: CVE-2019-12817
Creator: NVD / NIST
Published: 2019-06-25T12:15:11.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2019-12817 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.39%

30.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04
Linux	Linux Kernel	< 5.1.15
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Opensuse	Leap	15.1
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Eus	8.1
Redhat	Enterprise Linux Eus	8.2
Redhat	Enterprise Linux Eus	8.4
Redhat	Enterprise Linux Server Aus	8.2
Redhat	Enterprise Linux Server Aus	8.4
Redhat	Enterprise Linux Server Tus	8.2
Redhat	Enterprise Linux Server Tus	8.4

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/24/5Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108884Broken Link
https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbcPatch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
https://seclists.org/bugtraq/2019/Aug/13Mailing List, Third Party Advisory
https://support.f5.com/csp/article/K12876166Third Party Advisory
https://support.f5.com/csp/article/K12876166?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4031-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4495Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/06/24/5Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108884Broken Link
https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbcPatch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
https://seclists.org/bugtraq/2019/Aug/13Mailing List, Third Party Advisory
https://support.f5.com/csp/article/K12876166Third Party Advisory
https://support.f5.com/csp/article/K12876166?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4031-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4495Third Party Advisory

Timeline

Published: Jun 25, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12817?

How severe is CVE-2019-12817?

CVE-2019-12817 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12817?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12817?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST