PT-2016-3144 · Linux+2 · Linux Kernel+2

CVE-2016-9754

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Publicado

2016-05-13

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Atualizado

2023-01-17

CVSS v3.1

7.8

Alta

VetorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.6.1
Description The issue is related to the ring buffer resize function in the kernel's profiling subsystem, which mishandles certain integer calculations. This can be exploited by local users to gain privileges by writing to the /sys/kernel/debug/tracing/buffer size kb file. The vulnerability is caused by an integer overflow or cyclic shift, allowing a local attacker to elevate their privileges.
Recommendations For Linux kernel versions prior to 4.6.1, update to version 4.6.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the /sys/kernel/debug/tracing/buffer size kb file to minimize the risk of exploitation.

Exploit

Correção

Integer Overflow

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Enumeração de Fraquezas

Identificadores relacionados

ALT-PU-2016-1570
ALT-PU-2016-1572
BDU:2017-01659
CVE-2016-9754
USN-3422-1
USN-3422-2

Produtos afetados

Alt Linux
Linux Kernel
Ubuntu