CVE-2019-12817

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.

Published: Jun 25, 2019
Updated: Nov 9, 2025
CVE: CVE-2019-12817
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 7
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

Severity: Medium
Score: 6.9
AV:L/AC:M/Au:N/C:C/I:C/A:C

CWEs:

CWE-787

Affected Software
References

Software	From	Fixed in
canonical / ubuntu_linux	18.04	18.04.x
canonical / ubuntu_linux	18.10	18.10.x
canonical / ubuntu_linux	19.04	19.04.x
linux / linux_kernel	-	5.1.15
fedoraproject / fedora	29	29.x
fedoraproject / fedora	30	30.x
debian / debian_linux	9.0	9.0.x
debian / debian_linux	10.0	10.0.x
opensuse / leap	15.1	15.1.x
redhat / enterprise_linux	8.0	8.0.x
redhat / enterprise_linux_eus	8.1	8.1.x
redhat / enterprise_linux_eus	8.2	8.2.x
redhat / enterprise_linux_server_tus	8.2	8.2.x
redhat / enterprise_linux_server_aus	8.2	8.2.x
redhat / enterprise_linux_server_tus	8.4	8.4.x
redhat / enterprise_linux_eus	8.4	8.4.x
redhat / enterprise_linux_server_aus	8.4	8.4.x

Vulnerability Database

299,879

CVE-2019-12817

Deep Security Visibility Without the Complexity