CVE-2024-39292High· 7.8▾ TwilightIn 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 li…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
linux_kernel < 2.6.23linux_kernel >= 4.19, < 4.19.316linux_kernel >= 5.4, < 5.4.278linux_kernel >= 5.10, < 5.10.219linux_kernel >= 5.15, < 5.15.161linux_kernel >= 6.1, < 6.1.93linux_kernel >= 6.6, < 6.6.33linux_kernel >= 6.9, < 6.9.4linux_kernel = 6.10.0Upgrade past the affected range:
linux_kernel 6.9.4Connected by shared product, vendor, weakness, or advisory.
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