Vulnerability CVE-2019-8912
Published: 2019-02-18   Modified: 2019-02-19

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.

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Redhat -> Enterprise linux 
Linux -> Linux kernel 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
http://patchwork.ozlabs.org/patch/1042902/
http://www.securityfocus.com/bid/107063
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/
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