CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  Take a third party risk management course for FREE
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2020-27675

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.
Publish Date : 2020-10-22 Last Update Date : 2022-04-26
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
4.7
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 362

- Products Affected By CVE-2020-27675

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
5 OS Linux Linux Kernel * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 3
Linux Linux Kernel 1

- References For CVE-2020-27675

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073d0552ead5bfc7a3a9c01de590e924f11b5dd2
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
MLIST [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update
http://www.openwall.com/lists/oss-security/2021/01/19/3
MLIST [oss-security] 20210119 Xen Security Advisory 331 v3 (CVE-2020-27675) - Race condition in Linux event handler may crash dom0
https://github.com/torvalds/linux/commit/073d0552ead5bfc7a3a9c01de590e924f11b5dd2
https://security.gentoo.org/glsa/202011-06
GENTOO GLSA-202011-06
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
MLIST [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZG6TZLD23QO3PV2AN2HB625ZX47ALTT/
FEDORA FEDORA-2020-474d747b60
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNF2R7FUT4IOJ2RIRGQ7X5R4F4FVVLSR/
FEDORA FEDORA-2020-920a258c79
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6USZ4APZSBQDHGJLJMHW5JBN4QZV6SKZ/
FEDORA FEDORA-2020-09e4d062fe
https://xenbits.xen.org/xsa/advisory-331.html

- Metasploit Modules Related To CVE-2020-27675

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.