CVE-2024-36896 (GCVE-0-2024-36896)
Vulnerability from cvelistv5
Published
2024-05-30 15:29
Modified
2025-05-04 09:11
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix access violation during port device removal Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value. It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems. The same bug exists in the disable_show() routine, and it can be fixed the same way.
References
Impacted products
Vendor Product Version
Linux Linux Version: f061f43d7418cb62b8d073e221ec75d3f5b89e17
Version: f061f43d7418cb62b8d073e221ec75d3f5b89e17
Version: f061f43d7418cb62b8d073e221ec75d3f5b89e17
Version: f061f43d7418cb62b8d073e221ec75d3f5b89e17
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