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Vigil@nce - Linux kernel: use after free via fixed_mdio_bus_init

August 2019 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

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

Severity: 2/4.

Consequences: administrator access/rights, denial of service on server, denial of service on service.

Provenance: user shell.

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

Creation date: 14/06/2019.

DESCRIPTION OF THE VULNERABILITY

An attacker can force the usage of a freed memory area via fixed_mdio_bus_init() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

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




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