Bugzilla – Bug 1226955
VUL-0: CVE-2024-39292: kernel: um: add winch to winch_handlers before registering winch IRQ
Last modified: 2024-06-27 12:25:56 UTC
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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39292 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-39292.mbox https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33 https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0 https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14 https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2 https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4 https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0 https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1 https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101 https://www.cve.org/CVERecord?id=CVE-2024-39292
We do not enable UML