Impact: Important Public Date: 2019-06-24 CWE: CWE-119->(CWE-125|CWE-787) Bugzilla: 1720616: CVE-2019-12817 kernel: ppc: unrelated processes being able to read/write to each other's virtual memory 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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-12817 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security is aware of this issue. Updates will be released as they become available.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected |
| Red Hat Enterprise Linux 8 | kernel | Affected |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected |
| Red Hat Enterprise Linux 7 | kernel | Not affected |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
Vulmon