PT-2016-7782 · Linux+4 · Linux Kernel+4
Johannes Thumshirn
·
Publicado
2016-12-11
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Atualizado
2024-06-15
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CVE-2016-9576
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 4.8.14
Description
The issue allows local users to read or write to arbitrary kernel memory locations or cause a denial of service by leveraging access to a /dev/sg device. This is due to the blk rq map user iov function in block/blk-map.c not properly restricting the type of iterator, leading to potential use-after-free conditions.
Recommendations
For Linux kernel versions prior to 4.8.14, update to version 4.8.14 or later to resolve the issue. As a temporary workaround, consider restricting access to /dev/sg devices to minimize the risk of exploitation.
Correção
DoS
Use After Free
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Centos
Linux Kernel
Red Hat
Suse