CVE-2019-8912 Information

Description

In the Linux kernel through 4.20.11 af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member which leads to a use-after-free in sockfs_setattr.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html http://patchwork.ozlabs.org/patch/1042902/ http://www.securityfocus.com/bid/107063 https://access.redhat.com/errata/RHSA-2020:0174 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-8912 https://usn.ubuntu.com/3930-1/ https://usn.ubuntu.com/3930-2/ https://usn.ubuntu.com/3931-1/ https://usn.ubuntu.com/3931-2/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8