Vulnerability Details : 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 category: Memory Corruption
Products affected by CVE-2018-20976
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-20976
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-20976
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2018-20976
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-20976
-
https://usn.ubuntu.com/4144-1/
USN-4144-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://access.redhat.com/errata/RHSA-2020:0543
RHSA-2020:0543 - Security Advisory - Red Hat Customer Portal
-
https://seclists.org/bugtraq/2019/Nov/11
Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)
-
https://access.redhat.com/errata/RHSA-2020:0178
RHSA-2020:0178 - Security Advisory - Red Hat Customer Portal
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9fbd7bbc23dbdd73364be4d045e5d3612cf6e82
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
[SECURITY] [DLA 2114-1] linux-4.9 security update
-
https://access.redhat.com/errata/RHSA-2020:0592
RHSA-2020:0592 - Security Advisory - Red Hat Customer Portal
-
https://support.f5.com/csp/article/K10269585?utm_source=f5support&utm_medium=RSS
-
https://usn.ubuntu.com/4145-1/
USN-4145-1: Linux kernel vulnerabilities | Ubuntu security notices
-
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
Slackware Security Advisory - Slackware 14.2 kernel Updates ≈ Packet Storm
-
https://access.redhat.com/errata/RHSA-2020:0661
RHSA-2020:0661 - Security Advisory - Red Hat Customer Portal
-
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
Kernel Live Patch Security Notice LSN-0058-1 ≈ Packet Storm
-
https://access.redhat.com/errata/RHSA-2020:0609
RHSA-2020:0609 - Security Advisory - Red Hat Customer Portal
-
https://security.netapp.com/advisory/ntap-20190905-0002/
August 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
-
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
[security-announce] openSUSE-SU-2019:2173-1: important: Security update
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https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
[SECURITY] [DLA 1930-1] linux security update
-
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
[security-announce] openSUSE-SU-2019:2181-1: important: Security update
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