What is CVE-2022-48637?

CVE-2022-48637 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-2022-48637 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48637?

CVE-2022-48637 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-2022-48637?

No patch is currently available for CVE-2022-48637. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2022-48637 actively exploited?

CVE-2022-48637 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-2022-48637

High

In the Linux kernel, the following vulnerability has been resolved: bnxt: prevent skb UAF after handing over to PTP worker When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free. Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL.

Package Linux Kernel

Published 2024-04-28

Last modified 2025-03-21

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-416

CVE-2022-48637 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-2022-48637 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/08483e4c0c83b221b8891434a04cec405dee94a6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65
Patch

Details

CVE ID CVE-2022-48637

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-04-28

Modified 2025-03-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2022-48637?

CVE-2022-48637 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-2022-48637 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48637?

CVE-2022-48637 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-2022-48637?

No patch is currently available for CVE-2022-48637. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2022-48637 actively exploited?

No — CVE-2022-48637 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 →