CVE-2020-28915: linux linux_kernel Out-of-bounds Read

Modified

AliasesUBUNTU-CVE-2020-28915DEBIAN-CVE-2020-28915

Published 18-11-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-28915 is a medium (CVSS 6.1) Out-of-bounds Read vulnerability in linux linux_kernel. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 31.9% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 5.8, physical access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

6.1/10

010

Medium · v2.0 (NVD)

EPSS score

0.38%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

18-11-2020
PublishedVulnerability first disclosed.
04-08-2024
Last modifiedVulnerability information updated.

Description

A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.15.8v2.06.1

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.38% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.

Affected systems

Version check

Known conditions: physical access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu45 products

linuxAll versions (No fix recorded) | < 4.4.0-197.229 | < 4.15.0-126.129 | < 5.4.0-56.62
linux-aws< 4.4.0-1082.86 | < 4.4.0-1118.132 | < 4.15.0-1088.93 | < 5.4.0-1030.31
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1030.31~18.04.1