PT-2016-3144 · Linux+2 · Linux Kernel+2
CVE-2016-9754
·
Publicado
2016-05-13
·
Atualizado
2023-01-17
CVSS v3.1
7.8
Alta
| Vetor | AV: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
Produtos afetados
Alt Linux
Linux Kernel
Ubuntu