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CVE-2023-52509

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ravb: Fix use-after-free issue in ravb_tx_timeout_work() The ravb_stop() should call cancel_work_sync().

Published Mar 2, 2024CWE-416EPSS 0.24%

Overview

CVE-2023-52509 is a high-severity vulnerability. It was published on March 2, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

ravb: Fix use-after-free issue in ravb_tx_timeout_work()

The ravb_stop() should call cancel_work_sync(). Otherwise,

ravb_tx_timeout_work() is possible to use the freed priv after

ravb_remove() was called like below:

CPU0 CPU1

ravb_tx_timeout()

ravb_remove()

unregister_netdev()

free_netdev(ndev)

// free priv

ravb_tx_timeout_work()

// use priv

unregister_netdev() will call .ndo_stop() so that ravb_stop() is

called. And, after phy_stop() is called, netif_carrier_off()

is also called. So that .ndo_tx_timeout() will not be called

after phy_stop().

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/105abd68ad8f781985113aee2e92e0702b133705Refgit.kernel.org/stable/c/3971442870713de527684398416970cf025b4f89Refgit.kernel.org/stable/c/616761cf9df9af838c0a1a1232a69322a9eb67e6Refgit.kernel.org/stable/c/65d34cfd4e347054eb4193bc95d9da7eaa72dee5Refgit.kernel.org/stable/c/6f6fa8061f756aedb93af12a8a5d3cf659127965Refgit.kernel.org/stable/c/db9aafa19547833240f58c2998aed7baf414dc82Refgit.kernel.org/stable/c/105abd68ad8f781985113aee2e92e0702b133705Refgit.kernel.org/stable/c/3971442870713de527684398416970cf025b4f89Refgit.kernel.org/stable/c/616761cf9df9af838c0a1a1232a69322a9eb67e6Refgit.kernel.org/stable/c/65d34cfd4e347054eb4193bc95d9da7eaa72dee5

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52509?

CVE-2023-52509 is a high-severity vulnerability. It was published on March 2, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52509?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52509?

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-2023-52509?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52509 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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