PT-2017-14686 · Linux+1 · Linux Kernel+1
CVE-2017-17053
·
Publicado
2017-08-30
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Atualizado
2023-06-21
CVSS v3.1
7.0
Alta
| Vetor | AV:L/AC:H/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 4.12.10
Description
The issue arises from the
init new context function in the Linux kernel, which does not correctly handle errors from LDT table allocation when forking a new process. This allows a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. The vulnerability is specific to kernels built with CONFIG MODIFY LDT SYSCALL=y.Recommendations
For versions prior to 4.12.10, update to version 4.12.10 or later to resolve the issue. As a temporary workaround, consider disabling the
init new context function or restricting the use of CONFIG MODIFY LDT SYSCALL=y until a patch is available.Correção
Use After Free
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Linux Kernel