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This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...

SYNTHESIS OF THE VULNERABILITY

Impacted products: Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES.

Severity: 2/4.

Consequences: privileged access/rights, data creation/edition.

Provenance: user shell.

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

Creation date: 12/12/2018.

DESCRIPTION OF THE VULNERABILITY

An attacker can bypass restrictions via Userfaultfd Sparse Tmpfs Files Write of the Linux kernel, in order to escalate his privileges.

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