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CVE-2024-38597

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: eth: sungem: remove .ndo_poll_controller to avoid deadlocks Erhard reports netpoll warnings from sungem: netpoll_send_skb_on…

Published Jun 19, 2024CWE-667EPSS 0.18%

Overview

CVE-2024-38597 is a medium-severity vulnerability. It was published on June 19, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

eth: sungem: remove .ndo_poll_controller to avoid deadlocks

Erhard reports netpoll warnings from sungem:

netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (gem_start_xmit+0x0/0x398)

WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c

gem_poll_controller() disables interrupts, which may sleep.

We can't sleep in netpoll, it has interrupts disabled completely.

Strangely, gem_poll_controller() doesn't even poll the completions,

and instead acts as if an interrupt has fired so it just schedules

NAPI and exits. None of this has been necessary for years, since

netpoll invokes NAPI directly.

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/476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6Refgit.kernel.org/stable/c/5de5aeb98f9a000adb0db184e32765e4815d860bRefgit.kernel.org/stable/c/6400d205fbbcbcf9b8510157e1f379c1d7e2e937Refgit.kernel.org/stable/c/ac0a230f719b02432d8c7eba7615ebd691da86f4Refgit.kernel.org/stable/c/e22b23f5888a065d084e87db1eec639c445e677fRefgit.kernel.org/stable/c/faf94f1eb8a34b2c31b2042051ef36f63420ecceRefgit.kernel.org/stable/c/fbeeb55dbb33d562149c57e794f06b7414e44289Refgit.kernel.org/stable/c/476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6Refgit.kernel.org/stable/c/5de5aeb98f9a000adb0db184e32765e4815d860bRefgit.kernel.org/stable/c/6400d205fbbcbcf9b8510157e1f379c1d7e2e937

How CyberStrike helps

Frequently asked questions

What is CVE-2024-38597?

CVE-2024-38597 is a medium-severity vulnerability. It was published on June 19, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-38597?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-38597?

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-2024-38597?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-38597 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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