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Vigil@nce - RHEL Kernel: buffer overflow via NFS Client Direct IO Write
November 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: RHEL.
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: 30/09/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a buffer overflow via NFS Client Direct IO Write of RHEL Kernel, in order to trigger a denial of service, and possibly to run code.
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