PT-2025-26059 · Linux+4 · Linux Kernel+4
Published
2022-07-22
·
Updated
2025-07-15
·
CVE-2022-50133
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.19.0-rc7-00043-gfd8619f4fd54
Description
A NULL pointer dereference issue has been identified in the Linux kernel, specifically in the xhci plat remove function. This issue can cause a kernel crash when the xhci->shared hcd is NULL. The problem arises after a specific commit, which omits the shared HCD if either root hub has no ports. Technical details about the issue include the function names
usb remove hcd() and xhci plat remove(), and the xhci->shared hcd variable. The issue can lead to a kernel crash, as evidenced by the provided Oops message, which includes details such as the CPU state and the call trace.Recommendations
For Linux kernel versions prior to 5.19.0-rc7-00043-gfd8619f4fd54, update to a newer version that includes the fix for the NULL pointer dereference issue in the xhci plat remove function. As a temporary workaround, consider disabling the
xhci plat remove() function until a patch is available. Restrict access to the vulnerable xhci->shared hcd variable to minimize the risk of exploitation. Avoid using the usb remove hcd() function in conjunction with the xhci plat remove() function until the issue is resolved.Exploit
Fix
NULL Pointer Dereference
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Centos
Linux Kernel
Red Hat
Suse