CVE-2020-27830

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1919900	Issue Tracking Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/08/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/08/4	Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-4843	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210625-0004/	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Information

Published : 2021-05-13 08:15

Updated : 2021-09-07 14:59

NVD link : CVE-2020-27830

Mitre link : CVE-2020-27830

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

debian

debian_linux

linux

linux_kernel

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