CVE-2021-47186

In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will be dereferenced later in tipc_crypto_key_xmit as can be seen in the trace [1]. [1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58

CVSS v3.0 5.5 MEDIUM

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

References

Link	Resource
https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916	Patch
https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916	Patch
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10	Patch
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10	Patch
https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9	Patch
https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

03 Mar 2025, 17:47

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
First Time		Linux linux Kernel Linux
References	~~() https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9 -~~	() https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9 - Patch
References	~~() https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916 -~~	() https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916 - Patch
References	~~() https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10 -~~	() https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5

10 Apr 2024, 19:49

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-04-10 19:15

Updated : 2025-03-03 17:47

NVD link : CVE-2021-47186

Mitre link : CVE-2021-47186

JSON object : View

Products Affected

linux

linux_kernel

CWE

No CWE.

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