CVE-2019-12817 — Out-of-bounds Write in Kernel

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-125 — Out-of-bounds Read12 documents9 sources
Severity
7.0HIGHNVD
EPSS
0.1%
top 79.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Linux KernelCanonical Ubuntu LinuxDebian Linux+6 more
Timeline
PublishedJun 25
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages3 packages

▶NVDlinux/linux_kernel< 5.1.15
▶Debianlinux/linux_kernel< 5.2.6-1+3
▶NVDopensuse/leap15.1

Also affects: Debian Linux 10.0, 9.0, Ubuntu Linux 18.04, 18.10, 19.04, Enterprise Linux 8.0, 8.1, 8.2, 8.4, Fedora 29, 30

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

6
GHSA
GHSA-47g7-45f4-j83m: arch/powerpc/mm/mmu_context_book3s64↗2022-05-24
▶
Kernel
Merge branch 'fixes' into next↗2019-07-01
▶
Kernel
Merge tag 'powerpc-5.2-6' into fixes↗2019-07-01
▶
OSV
CVE-2019-12817: arch/powerpc/mm/mmu_context_book3s64↗2019-06-25
▶
CVEList
CVE-2019-12817: arch/powerpc/mm/mmu_context_book3s64↗2019-06-25
▶

📋Vendor Advisories

3
Red Hat
kernel: ppc: unrelated processes being able to read/write to each other's virtual memory↗2019-06-24
▶
Ubuntu
Linux kernel vulnerability↗2019-06-24
▶
Debian
CVE-2019-12817: linux - arch/powerpc/mm/mmu_context_book3s64.c in the Linux kernel before 5.1.15 for pow...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-12817 kernel: ppc: unrelated processes being able to read/write to each other's virtual memory [fedora-all]↗2019-06-25
▶
Bugzilla
CVE-2019-12817 kernel: ppc: unrelated processes being able to read/write to each other's virtual memory↗2019-06-14
▶
CVE-2019-12817 — Out-of-bounds Write in Linux Kernel | cvebase