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archlinuxArch LinuxASA-201601-26
HistoryJan 25, 2016 - 12:00 a.m.

linux-lts: privilege escalation

2016-01-2500:00:00
Arch Linux
lists.archlinux.org
30

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

7.2 High

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

0.4%

It was reported that possible use-after-free vulnerability in keyring
facility, possibly leading to local privilege escalation, was found.
Function join_session_keyring in security/keys/process_keys.c holds a
reference to the requested keyring, but if that keyring is the same as
the one being currently used by the process, the kernel wouldnโ€™t
decrease keyring->usage before returning to userspace. The usage field
can be possibly overflowed causing use-after-free on the keyring object.

OSVersionArchitecturePackageVersionFilename
anyanyanylinux-lts<ย 4.1.16-1UNKNOWN

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

7.2 High

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

0.4%