High severity7.8NVD Advisory· Published Jun 24, 2024· Updated Aug 4, 2026
CVE-2024-39292
CVE-2024-39292
Description
In the Linux kernel, the following vulnerability has been resolved:
um: Add winch to winch_handlers before registering winch IRQ
Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list.
If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup().
Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.
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Affected products
5Patches
Vulnerability mechanics
References
9- git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4nvdMailing ListPatch
- git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2nvdMailing ListPatch
- git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14nvdMailing ListPatch
- git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0nvdMailing ListPatch
- git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33nvdMailing ListPatch
- git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1nvdMailing ListPatch
- git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101nvdMailing ListPatch
- git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0nvdMailing ListPatch
- lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlnvd
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