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VULNERABILITIES

CVE-2021-47186 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916 kernel.orgPatch
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10 kernel.orgPatch
https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9 kernel.orgPatch
https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916 CVEPatch
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10 CVEPatch

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.5, < 5.10.82
>= 5.11, < 5.15.5
5.16 rc1

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47186
NVD Published Date:
Apr 10, 2024
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2021-47186 Details - Not Deferred