CVE-2018-20976

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.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9fbd7bbc23dbdd73364be4d045e5d3612cf6e82 patch vendor advisory
https://security.netapp.com/advisory/ntap-20190905-0002/
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html vendor advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html mailing list
https://usn.ubuntu.com/4144-1/ vendor advisory
https://usn.ubuntu.com/4145-1/ vendor advisory
https://support.f5.com/csp/article/K10269585?utm_source=f5support&%3Butm_medium=RSS
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
https://seclists.org/bugtraq/2019/Nov/11 mailing list
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
https://access.redhat.com/errata/RHSA-2020:0178 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0543 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0592 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0609 vendor advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html mailing list
https://access.redhat.com/errata/RHSA-2020:0661 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20976?
CVE-2018-20976 has been scored as a high severity vulnerability.
How to fix CVE-2018-20976?
To fix CVE-2018-20976, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20976 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-20976 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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