Use After Free in Linux Kernel
CVE-2018-20976
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
Weakness classification (CWE)
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20190905-0002/
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/09/msg00025.html (mailing-list)
- usn.ubuntu.com/4144-1/ (vendor-advisory)
- usn.ubuntu.com/4145-1/ (vendor-advisory)
- support.f5.com/csp/article/K10269585
- packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058…
- seclists.org/bugtraq/2019/Nov/11 (mailing-list)
Frequently asked questions
- What is CVE-2018-20976?
- CVE-2018-20976 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2019-08-19.
- How severe is CVE-2018-20976?
- High severity. CVSS v3 base score is 7.8 out of 10.