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CVE-2019-12817

kernel: ppc: unrelated processes being able to read/write to each other's virtual memory

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Severity

Important

Red Hat Product Security

7

CVSS 3.0

Review impact separately from score.

Published · June 24, 2019

Updated · June 28, 2026

Description

A flaw was found in the way the Linux kernel's memory subsystem on certain 64-bit PowerPCs with the hash page table MMU handled memory above 512TB. A local, unprivileged user could use this flaw to escalate their privileges on the system.

Statement

Red Hat Product Security is aware of this issue. Updates will be released as they become available.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-1341 · Multiple Releases of Same Resource or Handle