PT-2018-12618 · Linux+1 · Linux Kernel+1
Wade Mealing
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Publicado
2017-12-21
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Atualizado
2023-02-24
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CVE-2018-14619
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 4.15-rc4
Description
A flaw was found in the crypto subsystem of the Linux kernel. The issue involves the "null skcipher" being dropped when each
af alg ctx is freed instead of when the aead tfm is freed. This can cause the null skcipher to be freed while it is still in use, leading to a local user being able to crash the system or possibly escalate privileges.Recommendations
For Linux kernel versions prior to 4.15-rc4, update to version 4.15-rc4 or later to resolve the issue. As a temporary workaround, consider restricting access to the crypto subsystem to minimize the risk of exploitation.
Correção
Use After Free
RCE
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Identificadores relacionados
Produtos afetados
Alt Linux
Linux Kernel