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cve[email protected]CVE-2017-7889
HistoryApr 17, 2017 - 12:59 a.m.

CVE-2017-7889

2017-04-1700:59:00
CWE-732
web.nvd.nist.gov
191
4
linux kernel
mm subsystem
config_strict_devmem
local user
/dev/mem
nvd
vulnerability
cve-2017-7889

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.

Affected configurations

NVD
Node
linuxlinux_kernelRange<3.2.91
OR
linuxlinux_kernelRange3.33.10.107
OR
linuxlinux_kernelRange3.113.12.74
OR
linuxlinux_kernelRange3.133.16.46
OR
linuxlinux_kernelRange3.173.18.50
OR
linuxlinux_kernelRange3.194.1.41
OR
linuxlinux_kernelRange4.24.4.63
OR
linuxlinux_kernelRange4.54.9.24
OR
linuxlinux_kernelRange4.104.10.12
Node
debiandebian_linuxMatch8.0
Node
canonicalubuntu_linuxMatch12.04-
OR
canonicalubuntu_linuxMatch14.04esm

Social References

More

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%