CVE-2020-8428 Detail

Current Description

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.1 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
http://www.openwall.com/lists/oss-security/2020/01/28/4 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2020/02/02/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6 Mailing List  Patch  Vendor Advisory 
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://security.netapp.com/advisory/ntap-20200313-0003/
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4325-1/
https://www.debian.org/security/2020/dsa-4667
https://www.debian.org/security/2020/dsa-4698
https://www.openwall.com/lists/oss-security/2020/01/28/2 Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

14 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-8428
NVD Published Date:
01/28/2020
NVD Last Modified:
06/10/2020
Source:
MITRE