What’s Vulnerable › Vulnerabilities
CVE-2019-12817
- Severity: high (CVSS 7.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2019-06-25 · updated 2026-06-17
- Weakness: CWE-787
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.
Affected products
- Canonical Ubuntu Linux: 18.04, 18.10, 19.04
- Debian Linux: 9.0, 10.0
- Fedoraproject Fedora: 29, 30
- Linux kernel: before 5.1.15 — fixed in 5.1.15
- openSUSE Leap: 15.1
- Red Hat Enterprise Linux: 8.0
- RedHat Enterprise Linux Eus: 8.1, 8.2, 8.4
- RedHat Enterprise Linux Server Aus: 8.2, 8.4
- RedHat Enterprise Linux Server Tus: 8.2, 8.4
How to fix
Upgrade to a fixed version: Linux kernel 5.1.15. Check the vendor advisory for mitigations.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
- http://www.openwall.com/lists/oss-security/2019/06/24/5
- http://www.securityfocus.com/bid/108884
- https://access.redhat.com/errata/RHSA-2019:2703
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbc
- 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/13
- https://support.f5.com/csp/article/K12876166
- https://support.f5.com/csp/article/K12876166?utm_source=f5support&%3Butm_medium=RSS
- https://usn.ubuntu.com/4031-1/
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