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Vulnerability of Linux kernel: out-of-bounds memory reading via f2fs_xattr_generic_list

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via f2fs_xattr_generic_list() of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
Vulnerable software: Android OS, Linux, Ubuntu.
Severity of this announce: 2/4.
Creation date: 10/06/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-356, CVE-2020-0067, USN-4387-1, USN-4388-1, USN-4389-1, USN-4390-1, VIGILANCE-VUL-32509.

Description of the vulnerability 

An attacker can force a read at an invalid address via f2fs_xattr_generic_list()...
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This cybersecurity bulletin impacts software or systems such as Android OS, Linux, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity weakness is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this computer vulnerability bulletin.

Solutions for this threat 

Solutions for this vulnerability are not yet public.
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