Buffer overflow in Linux Kernel
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 18.04, 18.10, 19.04
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 29, 30
- openSUSE Leap — versions 15.1
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Enterprise Linux Eus — versions 8.1, 8.2, 8.4
- Red Hat Enterprise Linux Server Aus — versions 8.2, 8.4
- Red Hat Enterprise Linux Server Tus — versions 8.2, 8.4
Weakness classification (CWE)
References
- usn.ubuntu.com/4031-1/ (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/06/24/5 (mailing-list, Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15 (Vendor Advisory)
- www.securityfocus.com/bid/108884 (vdb-entry, Broken Link)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4495 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Aug/13 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-12817?
- CVE-2019-12817 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.0/10. Published 2019-06-25.
- How severe is CVE-2019-12817?
- High severity. CVSS v3 base score is 7.0 out of 10.