CVE-2024-38597

MEDIUM
Published Jun 19, 2024 Modified Nov 21, 2024 CWE-667

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-667 CWE-667

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6 https://git.kernel.org/stable/c/5de5aeb98f9a000adb0db184e32765e4815d860b https://git.kernel.org/stable/c/6400d205fbbcbcf9b8510157e1f379c1d7e2e937 https://git.kernel.org/stable/c/ac0a230f719b02432d8c7eba7615ebd691da86f4 https://git.kernel.org/stable/c/e22b23f5888a065d084e87db1eec639c445e677f https://git.kernel.org/stable/c/faf94f1eb8a34b2c31b2042051ef36f63420ecce https://git.kernel.org/stable/c/fbeeb55dbb33d562149c57e794f06b7414e44289 https://git.kernel.org/stable/c/476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6 https://git.kernel.org/stable/c/5de5aeb98f9a000adb0db184e32765e4815d860b https://git.kernel.org/stable/c/6400d205fbbcbcf9b8510157e1f379c1d7e2e937 https://git.kernel.org/stable/c/ac0a230f719b02432d8c7eba7615ebd691da86f4 https://git.kernel.org/stable/c/e22b23f5888a065d084e87db1eec639c445e677f https://git.kernel.org/stable/c/faf94f1eb8a34b2c31b2042051ef36f63420ecce https://git.kernel.org/stable/c/fbeeb55dbb33d562149c57e794f06b7414e44289

Frequently Asked Questions

What is CVE-2024-38597? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-38597? +
CVE-2024-38597 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-38597? +
CVE-2024-38597 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-38597? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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