PT-2019-3455 · Linux+3 · Linux Kernel+3
Denis Efremov
·
Publicado
2019-07-17
·
Atualizado
2021-05-28
·
CVE-2019-14284
CVSS v3.1
6.2
Média
| Vetor | AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.2.3
Description
The issue is related to a division-by-zero error in the
setup format params() function of the Linux kernel. This can be exploited to cause a denial of service. An unprivileged local user can trigger the bug by setting specific drive geometry values that result in F SECT PER TRACK being zero, followed by a floppy format operation. This can be done even without a floppy disk inserted, as QEMU creates the floppy device by default.Recommendations
For Linux kernel versions prior to 5.2.3, update to version 5.2.3 or later to resolve the issue.
As a temporary workaround, consider restricting access to the floppy device to minimize the risk of exploitation.
Correção
DoS
Divide By Zero
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Linux Kernel
Suse
Ubuntu