CVE Watch—

CVE-2021-3493

Linux Kernel Privilege Escalation Vulnerability

CVSS

—

Sem CVSS

EPSS

49.2%

p99

KEV

SIM

20 de out. de 2022

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

49.2%EPSS · 30 dias49.2%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Linux / Kernel

Vulnerabilidade

Linux Kernel Privilege Escalation Vulnerability

Adicionado ao KEV

20 de out. de 2022

Corrigir até

10 de nov. de 2022

Uso conhecido em ransomware

Não

Descrição resumida

The overlayfs stacking file system in Linux kernel does not properly validate the application of file capabilities against user namespaces, which could lead to privilege escalation.

Ação necessária

Apply updates per vendor instructions.

Notas

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c03e2cda4a584cadc398e8f6641ca9988a39d52; https://nvd.nist.gov/vuln/detail/CVE-2021-3493

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