CVE Watch—

CVE-2021-3493

Linux Kernel Privilege Escalation Vulnerability

CVSS

—

Sin CVSS

EPSS

44.0%

p99

KEV

SÍ

20 oct 2022

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

44.0%EPSS · 30 días44.0%

2026-06-302026-07-16

Ficha del catálogo KEV

Producto

Linux / Kernel

Vulnerabilidad

Linux Kernel Privilege Escalation Vulnerability

Añadido a KEV

20 oct 2022

Remediar antes de

10 nov 2022

Uso conocido en ransomware

Descripción 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.

Acción requerida

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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