PT-2015-7565 · Linux+3 · Linux Kernel+3

Dmitry Vyukov

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Publicado

2015-12-30

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Atualizado

2024-06-15

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CVE-2015-7550

CVSS v3.1

5.5

Média

VetorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.3.4
Description The issue is related to the keyctl read key function in the Linux kernel, which does not properly use a semaphore. This allows local users to cause a denial of service, resulting in a NULL pointer dereference and system crash, or possibly have other unspecified impacts. The issue can be triggered by a crafted application that leverages a race condition between keyctl revoke and keyctl read calls.
Recommendations For Linux kernel versions prior to 4.3.4, update to version 4.3.4 or later to resolve the issue.

Exploit

Correção

DoS

Race Condition

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Enumeração de Fraquezas

CWE-362

Identificadores relacionados

ALT-PU-2016-1018
ALT-PU-2016-1485
CVE-2015-7550
DLA-378-1
DSA-3434-1
MGASA-2016-0225
MGASA-2016-0232
MGASA-2016-0233
OPENSUSE-SU-2016_0280-1
OPENSUSE-SU-2016_0301-1
OPENSUSE-SU-2016_0318-1
OPENSUSE-SU-2024:10128-1
SUSE-SU-2016:0168-1
SUSE-SU-2016:0585-1
SUSE-SU-2016:0911-1
SUSE-SU-2016:1102-1
SUSE-SU-2016:1203-1
SUSE-SU-2016:2074-1
SUSE-SU-2016_0168-1
USN-2888-1
USN-2890-1
USN-2890-2
USN-2890-3
USN-2907-1
USN-2907-2
USN-2910-1
USN-2910-2
USN-2911-1
USN-2911-2

Produtos afetados

Alt Linux
Linux Kernel
Suse
Ubuntu