vulnerability
Oracle Linux: CVE-2019-12817: ELSA-2019-2703: kernel security and bug fix update (IMPORTANT)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:N/C:C/I:C/A:C) | Jun 24, 2019 | Jul 21, 2020 | Dec 3, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
Jun 24, 2019
Added
Jul 21, 2020
Modified
Dec 3, 2025
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.
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.
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.
Solution
oracle-linux-upgrade-kernel
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