CVE-2018-20976

Published: Aug 19, 2019Modified: Nov 21, 2024

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

An issue was discovered in fs/xfs/xfs_super.c in the Linux kernel before 4.18. A use after free exists, related to xfs_fs_fill_super failure.

Affected (1)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Before 4.18

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (34)

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html

Source: cve@mitre.org

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html

Source: cve@mitre.org

http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html

Source: cve@mitre.org

http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2020:0178

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2020:0543

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2020:0592

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2020:0609

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2020:0661

Source: cve@mitre.org

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9fbd7bbc23dbdd73364be4d045e5d3612cf6e82

Source: cve@mitre.org

PatchVendor Advisory

https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

Source: cve@mitre.org

https://seclists.org/bugtraq/2019/Nov/11

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20190905-0002/

Source: cve@mitre.org

https://support.f5.com/csp/article/K10269585?utm_source=f5support&amp%3Butm_medium=RSS

Source: cve@mitre.org

https://usn.ubuntu.com/4144-1/

Source: cve@mitre.org

https://usn.ubuntu.com/4145-1/

Source: cve@mitre.org

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html