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CVE-2022-48748

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: bridge: vlan: fix memory leak in __allowed_ingress When using per-vlan state, if vlan snooping and stats are disabled, unt…

Published Jun 20, 2024CWE-400EPSS 1.13%

Overview

CVE-2022-48748 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: vlan: fix memory leak in __allowed_ingress

When using per-vlan state, if vlan snooping and stats are disabled,

untagged or priority-tagged ingress frame will go to check pvid state.

If the port state is forwarding and the pvid state is not

learning/forwarding, untagged or priority-tagged frame will be dropped

but skb memory is not freed.

Should free skb when __allowed_ingress returns false.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511Refgit.kernel.org/stable/c/446ff1fc37c74093e81db40811a07b5a19f1d797Refgit.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098Refgit.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdffRefgit.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511Refgit.kernel.org/stable/c/446ff1fc37c74093e81db40811a07b5a19f1d797Refgit.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098Refgit.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdff

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48748?

CVE-2022-48748 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-48748?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-48748?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-48748?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48748 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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