Vulnerability Details : CVE-2020-14314
A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.
Products affected by CVE-2020-14314
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12533:*:*:*:vsphere:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12658:*:*:*:vsphere:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12859:*:*:*:vsphere:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13170:*:*:*:vsphere:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13586:*:*:*:vsphere:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13861:*:*:*:vsphere:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-14314
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 3 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-14314
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
Red Hat, Inc. | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-14314
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2020-14314
-
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
[SECURITY] [DLA 2420-2] linux regression updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
[SECURITY] [DLA 2385-1] linux-4.19 security updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/4576-1/
USN-4576-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5872331b3d91820e14716632ebb56b1399b34fe1
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
[SECURITY] [DLA 2420-1] linux security updateMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14314
1853922 – (CVE-2020-14314) CVE-2020-14314 kernel: buffer uses out of index in ext3/4 filesystemIssue Tracking;Third Party Advisory
-
https://www.starwindsoftware.com/security/sw-20210325-0003/
CVE-2020-14314 Linux Kernel vulnerability in StarWind VSAN for vSphere (VSA)Third Party Advisory
-
https://usn.ubuntu.com/4579-1/
USN-4579-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://usn.ubuntu.com/4578-1/
USN-4578-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lore.kernel.org/linux-ext4/f53e246b-647c-64bb-16ec-135383c70ad7@redhat.com/T/#u
[PATCH 0/1] ext4: fix potential negative array index in do_splitVendor Advisory
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