CVE & CISA-KEV Catalog

CVE-2020-27835

MEDIUM
4.4
CVSS v3
NVD

Description

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.

CWE-416Use After Free

How to fix

Remediation Available
linuxDebian
Fixed in:5.9.15-1CVE-2020-27835
Fixed in:5.9.15-1CVE-2020-27835
Fixed in:5.9.15-1CVE-2020-27835
Fixed in:5.9.15-1CVE-2020-27835
linux-hwe-5.8Ubuntu
Fixed in:5.8.0-44.50~20.04.1USN-4751-1
linux-image-5.8.0-44-genericUbuntu
Fixed in:5.8.0-44.50~20.04.1USN-4751-1
linux-image-5.8.0-44-generic-lpaeUbuntu
Fixed in:5.8.0-44.50~20.04.1USN-4751-1
linux-image-5.8.0-44-lowlatencyUbuntu
Fixed in:5.8.0-44.50~20.04.1USN-4751-1
linux-image-generic-64k-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-generic-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-generic-lpae-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-lowlatency-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-virtual-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.31%probability of exploitation in 30 days
23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2019-0708Critical9.8100%KEV + Ransom-
CVE-2021-31166Critical9.8100%KEVFix
CVE-2015-5119Critical9.899%KEV-
CVE-2010-3962High8.197%KEV-
CVE-2015-0313Critical9.896%KEVFix
CVE-2017-9798High7.595%-Fix
Embed a live status badge for CVE-2020-27835
CVE-2020-27835 severity badge

Markdown

[![CVE-2020-27835](https://tridentstack.com/cve/badge/CVE-2020-27835.svg)](https://tridentstack.com/cve/CVE-2020-27835)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-27835"><img src="https://tridentstack.com/cve/badge/CVE-2020-27835.svg" alt="CVE-2020-27835"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.