CVE - CVE-2024-26933

CVE-ID
CVE-2024-26933	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix deadlock in port "disable" sysfs attribute The show and store callback routines for the "disable" sysfs attribute file in port.c acquire the device lock for the port's parent hub device. This can cause problems if another process has locked the hub to remove it or change its configuration: Removing the hub or changing its configuration requires the hub interface to be removed, which requires the port device to be removed, and device_del() waits until all outstanding sysfs attribute callbacks for the ports have returned. The lock can't be released until then. But the disable_show() or disable_store() routine can't return until after it has acquired the lock. The resulting deadlock can be avoided by calling sysfs_break_active_protection(). This will cause the sysfs core not to wait for the attribute's callback routine to return, allowing the removal to proceed. The disadvantage is that after making this call, there is no guarantee that the hub structure won't be deallocated at any moment. To prevent this, we have to acquire a reference to it first by calling hub_get().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7 URL:https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7 MISC:https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e URL:https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e MISC:https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05 URL:https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05 MISC:https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1 URL:https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1 MISC:https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c URL:https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c
Assigning CNA
kernel.org
Date Record Created
20240219	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240219)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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