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CVE-2020-27830

Good to know:

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Date: May 13, 2021

A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.

Language: C

Severity Score

Related Resources (11)

https://www.debian.org/security/2021/dsa-4843
http://www.openwall.com/lists/oss-security/2020/12/08/1
https://github.com/gregkh/linux/commit/f0992098cadb4c9c6a00703b66cafe604e178fea
https://bugzilla.redhat.com/show_bug.cgi?id=1919900
https://nvd.nist.gov/vuln/detail/CVE-2020-27830
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-27830
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
https://security-tracker.debian.org/tracker/CVE-2020-27830
http://www.openwall.com/lists/oss-security/2020/12/08/4
https://security.netapp.com/advisory/ntap-20210625-0004/
https://www.mend.io/vulnerability-database/CVE-2020-27830

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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