CVE-2022-50470

Description

In the Linux kernel, the following vulnerability has been resolved: xhci: Remove device endpoints from bandwidth list when freeing the device Endpoints are normally deleted from the bandwidth list when they are dropped, before the virt device is freed. If xHC host is dying or being removed then the endpoints aren't dropped cleanly due to functions returning early to avoid interacting with a non-accessible host controller. So check and delete endpoints that are still on the bandwidth list when freeing the virt device. Solves a list_del corruption kernel crash when unbinding xhci-pci, caused by xhci_mem_cleanup() when it later tried to delete already freed endpoints from the bandwidth list. This only affects hosts that use software bandwidth checking, which currenty is only the xHC in intel Panther Point PCH (Ivy Bridge)

PUBLISHED Reserved 2025-10-04 | Published 2025-10-04 | Updated 2025-10-04 | Assigner Linux

Product status

References

git.kernel.org/...c/5e4ce28ad907aa54f13b21d5f1dc490525957b0c

git.kernel.org/...c/f0de39474078adef6ece7a183e34c15ce2c1d8d1

git.kernel.org/...c/cebbc8d335d6bcc1316584f779c08f80287c6af8

git.kernel.org/...c/8f1cd9633d1f21efc13e8fc75be8f2b6bb85e38c

git.kernel.org/...c/678d2cc2041cc6ce05030852dce9ad42719abcfc

git.kernel.org/...c/c892a81c7424b4f6a660cb9c249d354ccf3afeca

git.kernel.org/...c/3bf860a41e0f2fcea0ac3aae8f7ef887a7994b70

git.kernel.org/...c/5aed5b7c2430ce318a8e62f752f181e66f0d1053

cve.org (CVE-2022-50470)

nvd.nist.gov (CVE-2022-50470)

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