Medium severity · published Sep 15, 2020
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
5.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
through 5.8.9; 5.9.0 · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
SV
Starwind Virtual San · Starwindsoftware
v8; v8; v8; v8; v8; v8 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-14314
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-14314
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14314
Patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5872331b3d91820e14716632ebb56b1399b34fe1
Mailing List
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
Mailing List
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
Mailing List
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
lore.kernel.org
https://lore.kernel.org/linux-ext4/f53e246b-647c-64bb-16ec-135383c70ad7%40redhat.com/T/#u
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