CVE-2021-20239

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality...

CVE-2021-20239

CVE-2021-20239 describes a flaw in the Linux kernel prior to 5.4.92 within the BPF protocol. A local attacker can leak information about kernel internal addresses, impacting confidentiality. The issue is tied to the BPF verifier/run-time handling and does not require remote access. Affected produ...

Ubuntu: Security Advisory (USN-4910-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-4910-1: Linux kernel vulnerabilities

Ryota Shiga discovered that the sockopt BPF hooks in the Linux kernel could allow a user space program to probe for valid kernel addresses. A local attacker could use this to ease exploitation of another kernel vulnerability. CVE-2021-20239 It was discovered that the BPF verifier in the Linux...

Ubuntu: Security Advisory (USN-4878-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...