high
7.8
CWE
119 787
Advisory Published
Updated

CVE-2020-27815: Buffer Overflow

First published: Wed May 26 2021(Updated: )

A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Kernel>4.4.249
Linux Kernel>=4.5<4.9.249
Linux Kernel>=4.10<4.14.213
Linux Kernel>=4.15<4.19.164
Linux Kernel>=4.20<5.4.86
Linux Kernel>=5.5<5.10.4
Debian Linux=9.0
Debian Linux=10.0
NetApp H300S Firmware
NetApp H300S Firmware
NetApp H500e Firmware
NetApp H500e Firmware
NetApp H700S
NetApp H700S
NetApp H300E
NetApp H300E Firmware
NetApp H500S Firmware
NetApp H500e Firmware
NetApp H700E
NetApp H700E
NetApp H410S
NetApp H410S Firmware
NetApp H410C
NetApp H410C Firmware
NetApp A250 Firmware
NetApp A250 Firmware
NetApp FAS 500F Firmware
NetApp FAS500F Firmware
All of
NetApp H300S Firmware
NetApp H300S Firmware
All of
NetApp H500e Firmware
NetApp H500e Firmware
All of
NetApp H700S
NetApp H700S
All of
NetApp H300E
NetApp H300E Firmware
All of
NetApp H500S Firmware
NetApp H500e Firmware
All of
NetApp H700E
NetApp H700E
All of
NetApp H410S
NetApp H410S Firmware
All of
NetApp H410C
NetApp H410C Firmware
All of
NetApp A250 Firmware
NetApp A250 Firmware
All of
NetApp FAS 500F Firmware
NetApp FAS500F Firmware
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.133-1
6.12.21-1
6.12.22-1

Remedy

http://www.openwall.com/lists/oss-security/2020/12/28/1

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-27815?

    CVE-2020-27815 has a high severity due to its potential to cause system panics and memory corruption.

  • How do I fix CVE-2020-27815?

    To fix CVE-2020-27815, upgrade to the recommended Linux kernel versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1.

  • Who is affected by CVE-2020-27815?

    CVE-2020-27815 affects local users with the ability to set extended attributes on systems running specific vulnerable versions of the Linux kernel.

  • Can CVE-2020-27815 lead to privilege escalation?

    Yes, CVE-2020-27815 can potentially allow local attackers to escalate their privileges on the affected system.

  • What can an attacker do with CVE-2020-27815?

    An attacker exploiting CVE-2020-27815 can cause a system panic, leading to denial of service and possible memory corruption.

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