Ubuntu.comUB:CVE-2019-12817CVE-2019-12817
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
21.8%
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.
Notes
| Author | Note |
|---|---|
| tyhicks | The vulnerability was introduced in upstream kernel version v4.17 This issue only affects ppc64el. The 32-bit powerpc architecture is not affected. Power8, Power7, Power6, Power5, and older 64-bit Power systems are affected by default Power9 LPARs running under PowerVM are affected by default. This issue does not affect Power9 bare metal systems by default. Power9 bare metal is only affected when “disable_radix” is specified as a kernel boot option. |
Related
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
21.8%