Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.0, < 6.1.91 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848Patch
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277Patch
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434Patch
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304cePatch
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848Patch
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277Patch
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434Patch
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304cePatch
FAQ
What is CVE-2024-36896?
CVE-2024-36896 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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...
How severe is CVE-2024-36896?
CVE-2024-36896 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2024-36896?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.