CVE-2021-41073

High

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

Package Linux Kernel
Published 2021-09-19
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-763

CVE-2021-41073 is a Release of Invalid Pointer or Reference vulnerability

What is Release of Invalid Pointer or Reference?

The product attempts to return a memory resource to the system but calls the wrong release function. Learn more on MITRE CWE

References

7 total
Showing 5 of 7 references View all on NVD

Frequently asked questions

  • What is CVE-2021-41073?

    CVE-2021-41073 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Release of Invalid Pointer or Reference flaw (CWE-763) . CVE-2021-41073 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-41073?

    CVE-2021-41073 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2021-41073?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-41073 patch availability.

  • Is CVE-2021-41073 actively exploited?

    No. CVE-2021-41073 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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