CVE-2024-42127

MEDIUM
Published Jul 30, 2024 Modified Nov 3, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: drm/lima: fix shared irq handling on driver remove lima uses a shared interrupt, so the interrupt handlers must be prepared to be called at any time. At driver removal time, the clocks are disabled early and the interrupts stay registered until the very end of the remove process due to the devm usage. This is potentially a bug as the interrupts access device registers which assumes clocks are enabled. A crash can be triggered by removing the driver in a kernel with CONFIG_DEBUG_SHIRQ enabled. This patch frees the interrupts at each lima device finishing callback so that the handlers are already unregistered by the time we fully disable clocks.

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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

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/04d531b9a1875846d4f89953b469ad463aa7a770 https://git.kernel.org/stable/c/0a487e977cb8897ae4c51ecd34bbaa2b005266c9 https://git.kernel.org/stable/c/0d60c43df59ef01c08dc7b0c45495178f9d05a13 https://git.kernel.org/stable/c/17fe8b75aaf0bb1bdc31368963446b421c22d0af https://git.kernel.org/stable/c/25d0d9b83d855cbc5d5aa5ae3cd79d55ea0c84a8 https://git.kernel.org/stable/c/a6683c690bbfd1f371510cb051e8fa49507f3f5e https://git.kernel.org/stable/c/b5daf9217a50636a969bc1965f827878aeb09ffe https://git.kernel.org/stable/c/04d531b9a1875846d4f89953b469ad463aa7a770 https://git.kernel.org/stable/c/0a487e977cb8897ae4c51ecd34bbaa2b005266c9 https://git.kernel.org/stable/c/0d60c43df59ef01c08dc7b0c45495178f9d05a13 https://git.kernel.org/stable/c/17fe8b75aaf0bb1bdc31368963446b421c22d0af https://git.kernel.org/stable/c/25d0d9b83d855cbc5d5aa5ae3cd79d55ea0c84a8 https://git.kernel.org/stable/c/a6683c690bbfd1f371510cb051e8fa49507f3f5e https://git.kernel.org/stable/c/b5daf9217a50636a969bc1965f827878aeb09ffe

Frequently Asked Questions

What is CVE-2024-42127? +
In the Linux kernel, the following vulnerability has been resolved: drm/lima: fix shared irq handling on driver remove lima uses a shared interrupt, so the interrupt handlers must be prepared to be called at any time. At driver removal time, the clocks are disabled early and the interrupts stay registered until the very end of the remove process due to the devm usage. This is potentially a bug as the interrupts access device registers which assumes clocks are enabled. A crash can be triggered by removing the driver in a kernel with CONFIG_DEBUG_SHIRQ enabled. This patch frees the interrupts at each lima device finishing callback so that the handlers are already unregistered by the time we fully disable clocks. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-42127? +
CVE-2024-42127 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-2024-42127? +
CVE-2024-42127 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-2024-42127? +
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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