CVE-2023-53580 (GCVE-0-2023-53580)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2025-10-04 15:43
VLAI?
Title
USB: Gadget: core: Help prevent panic during UVC unconfigure
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: Gadget: core: Help prevent panic during UVC unconfigure Avichal Rakesh reported a kernel panic that occurred when the UVC gadget driver was removed from a gadget's configuration. The panic involves a somewhat complicated interaction between the kernel driver and a userspace component (as described in the Link tag below), but the analysis did make one thing clear: The Gadget core should accomodate gadget drivers calling usb_gadget_deactivate() as part of their unbind procedure. Currently this doesn't work. gadget_unbind_driver() calls driver->unbind() while holding the udc->connect_lock mutex, and usb_gadget_deactivate() attempts to acquire that mutex, which will result in a deadlock. The simple fix is for gadget_unbind_driver() to release the mutex when invoking the ->unbind() callback. There is no particular reason for it to be holding the mutex at that time, and the mutex isn't held while the ->bind() callback is invoked. So we'll drop the mutex before performing the unbind callback and reacquire it afterward. We'll also add a couple of comments to usb_gadget_activate() and usb_gadget_deactivate(). Because they run in process context they must not be called from a gadget driver's ->disconnect() callback, which (according to the kerneldoc for struct usb_gadget_driver in include/linux/usb/gadget.h) may run in interrupt context. This may help prevent similar bugs from arising in the future.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d8195536ce2624e2947d9f56b1a61e7a27874bd3 , < bed19d95fcb9c98dfaa9585922b39a2dfba7898d (git)
Affected: 286d9975a838d0a54da049765fa1d1fb96b89682 , < 8c1edc00db65f6d4408b3d1cd845e8da3b9e0ca4 (git)
Affected: 286d9975a838d0a54da049765fa1d1fb96b89682 , < 65dadb2beeb7360232b09ebc4585b54475dfee06 (git)
Affected: 85102a45c7390caf124a3a5796574446f1e037b9 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.1.46 , ≤ 6.1.* (semver)
Unaffected: 6.4.11 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: Gadget: core: Help prevent panic during UVC unconfigure\n\nAvichal Rakesh reported a kernel panic that occurred when the UVC\ngadget driver was removed from a gadget\u0027s configuration.  The panic\ninvolves a somewhat complicated interaction between the kernel driver\nand a userspace component (as described in the Link tag below), but\nthe analysis did make one thing clear: The Gadget core should\naccomodate gadget drivers calling usb_gadget_deactivate() as part of\ntheir unbind procedure.\n\nCurrently this doesn\u0027t work.  gadget_unbind_driver() calls\ndriver-\u003eunbind() while holding the udc-\u003econnect_lock mutex, and\nusb_gadget_deactivate() attempts to acquire that mutex, which will\nresult in a deadlock.\n\nThe simple fix is for gadget_unbind_driver() to release the mutex when\ninvoking the -\u003eunbind() callback.  There is no particular reason for\nit to be holding the mutex at that time, and the mutex isn\u0027t held\nwhile the -\u003ebind() callback is invoked.  So we\u0027ll drop the mutex\nbefore performing the unbind callback and reacquire it afterward.\n\nWe\u0027ll also add a couple of comments to usb_gadget_activate() and\nusb_gadget_deactivate().  Because they run in process context they\nmust not be called from a gadget driver\u0027s -\u003edisconnect() callback,\nwhich (according to the kerneldoc for struct usb_gadget_driver in\ninclude/linux/usb/gadget.h) may run in interrupt context.  This may\nhelp prevent similar bugs from arising in the future."
        }
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        "dateUpdated": "2025-10-04T15:43:57.064Z",
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    "datePublished": "2025-10-04T15:43:57.064Z",
    "dateReserved": "2025-10-04T15:14:15.926Z",
    "dateUpdated": "2025-10-04T15:43:57.064Z",
    "state": "PUBLISHED"
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}


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