CVE-2021-37159

Medium

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

Package Linux Kernel
Published 2021-07-21
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

6.4

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

Weakness type

CWE-415

CVE-2021-37159 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-37159 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

4 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2021-37159?

    CVE-2021-37159 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.4 out of 10 . CVE-2021-37159 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-37159?

    CVE-2021-37159 has a CVSS score of 6.4 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2021-37159?

    No patch is currently available for CVE-2021-37159. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2021-37159 actively exploited?

    No — CVE-2021-37159 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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