What is CVE-2021-47017?

CVE-2021-47017 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2021-47017 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47017?

CVE-2021-47017 has a CVSS score of 7.8 out of 10, rated High severity. 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-2021-47017?

No patch is currently available for CVE-2021-47017. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47017 actively exploited?

CVE-2021-47017 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2021-47017

High

In the Linux kernel, the following vulnerability has been resolved: ath10k: Fix a use after free in ath10k_htc_send_bundle In ath10k_htc_send_bundle, the bundle_skb could be freed by dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later by bundle_skb->len. As skb_len = bundle_skb->len, my patch replaces bundle_skb->len to skb_len after the bundle_skb was freed.

Package Linux Kernel

Published 2024-02-28

Last modified 2024-12-09

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-416

CVE-2021-47017 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47017 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47017

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2024-12-09

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47017?

CVE-2021-47017 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2021-47017 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47017?

CVE-2021-47017 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-2021-47017?

No patch is currently available for CVE-2021-47017. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47017 actively exploited?

No — CVE-2021-47017 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →