Vulnerability CVE-2024-42127
Published: 2024-07-30

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.

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