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Vigil@nce - Linux kernel: file reading via Overlayfs Unprivileged User Namespaces

October 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: Linux, Ubuntu.

Severity: 1/4.

Consequences: data reading.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 13/10/2020.

DESCRIPTION OF THE VULNERABILITY

A local attacker can read a file via Overlayfs Unprivileged User Namespaces of the Linux kernel, in order to obtain sensitive information.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/...




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