01 Record

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

MediumPUBLISHEDCNA: redhat

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.37% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 30.7% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2020-09-15 00:00Z6 YR AGO

Last updated

2024-08-04 12:39Z2 YR AGO

Reserved

2020-06-17

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

b5b6106a84a250a80f149518fa7c9edd14887e8f3a38fe863b20f77793c4d629

05 Affected products

VendorProductVersionsPlatforms

Linux Kernelkernelbefore 5.9-rc2—

06 References

git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5872331b3d91820e14716632ebb56b1399b34fe1
lore.kernel.orghttps://lore.kernel.org/linux-ext4/f53e246b-647c-64bb-16ec-135383c70ad7%40redhat.com/T/#u
bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14314
lists.debian.org[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlmailing-list
usn.ubuntu.comUSN-4576-1https://usn.ubuntu.com/4576-1/vendor-advisory
usn.ubuntu.comUSN-4578-1https://usn.ubuntu.com/4578-1/vendor-advisory
usn.ubuntu.comUSN-4579-1https://usn.ubuntu.com/4579-1/vendor-advisory
lists.debian.org[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlmailing-list
lists.debian.org[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression updatehttps://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlmailing-list
www.starwindsoftware.comhttps://www.starwindsoftware.com/security/sw-20210325-0003/

07 Fixed in

AlmaLinux 8

kernel-tools-libs-devel
Fixed in 4.18.0-305.el8

CloudLinux 8

kernel-tools-libs-devel
Fixed in 4.18.0-305.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Debian 12

linux
Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.