CVE-2019-12817
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 7.0 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Canonical Ubuntu Linux 18.04
- Canonical Ubuntu Linux 18.10
- Canonical Ubuntu Linux 19.04
- Linux Kernel < 5.1.15
- Fedoraproject Fedora 29
- Fedoraproject Fedora 30
- Debian Linux 9.0
- Debian Linux 10.0
Attack profile CVSS 3.1 · 7.0
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2019-12817.md and follow it. Check whether this project is affected by CVE-2019-12817. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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://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
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/
- https://www.debian.org/security/2019/dsa-4495
- 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/