xhci: Remove device endpoints from bandwidth list when freeing the device
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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)
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.2
References 8
git.kernel.org
- stable/c/5e4ce28ad907aa54f13b21d5f1dc490525957b0c
- stable/c/f0de39474078adef6ece7a183e34c15ce2c1d8d1
- stable/c/cebbc8d335d6bcc1316584f779c08f80287c6af8
- stable/c/8f1cd9633d1f21efc13e8fc75be8f2b6bb85e38c
- stable/c/678d2cc2041cc6ce05030852dce9ad42719abcfc
- stable/c/c892a81c7424b4f6a660cb9c249d354ccf3afeca
- stable/c/3bf860a41e0f2fcea0ac3aae8f7ef887a7994b70
- stable/c/5aed5b7c2430ce318a8e62f752f181e66f0d1053