CVE-2026-64329

CVE CVE-2026-64329EUVD EUVD-2026-48873Published 2026-07-25T08:49:57.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove The threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(), which on a connector-change event calls ucsi_connector_change() and schedules connector work. In ucsi_ccg_remove(), ucsi_destroy() frees uc->ucsi (kfree) before free_irq() is called, so a handler invocation already in flight may access the freed object after ucsi_destroy(). CPU 0 (remove) | CPU 1 (threaded IRQ) ucsi_destroy(uc->ucsi) | ccg_irq_handler() kfree(ucsi) // FREE | ucsi_notify_common(uc->ucsi) // USE Move free_irq() before ucsi_destroy() in the remove path. It is kept after ucsi_unregister(): ucsi_unregister() cancels connector work whose handler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(), which waits for a completion that is signalled from the IRQ handler, so the IRQ must stay active until that work has been cancelled. The probe error path already orders free_irq() before ucsi_destroy(). This bug was found by static analysis.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <c32df11147822d22facee8fa30c2e8971d12f426; patch: 7.2-rc3; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <dbb500bad02146b388041877574829016591ddc8; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <f5c772b76bbd95de8be51cf849c6098f6af6fcf9; patch: 6.12.96; patch: 6.1.178; patch: 7.1.4; patch: 5.10.261; patch: 5.15.212; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <99381e762273a2410a3f0216000be32b013c0ea9; patch: 6.18.39; patch: 6.6.145; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <1f0bdc2884b67de337215079bba166df0cdf4ac5; 5.5; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <86c9ee928c4a370e323e432aaf8dca79c4ba7c85; patch: 0; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <1a160076d3d0dcd4a98a4599ad96eec0790b099b; e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <f1adeb1ff8bef1467d6961059810795d02bbad5d

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Carried in the product catalogue

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Linux — Linux

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