CVE-2023-52898
In the Linux kernel, the following vulnerability has been resolved: xhci: Fix null pointer dereference when host dies Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: xhci: Fix null pointer dereference when host dies Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies. Usb core may call xhci_free_dev() which frees the xhci->devs[slot_id] virt device at the same time that xhci_kill_endpoint_urbs() tries to loop through all the device's endpoints, checking if there are any cancelled urbs left to give back. hold the xhci spinlock while freeing the virt device
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/081105213ff6f661c114781d469233c7d0e09c2ePatch
- https://git.kernel.org/stable/c/133b902378e4acbd824c29dd0d48570ad596e368Patch
- https://git.kernel.org/stable/c/6fac4b5cecb3928a0a81069aaa815a2edc8dd5a1Patch
- https://git.kernel.org/stable/c/a2bc47c43e70cf904b1af49f76d572326c08bca7Patch
- https://git.kernel.org/stable/c/c462ac871f49753eca86bb960f573b993976a5eaPatch
- https://git.kernel.org/stable/c/ea2ee5e9991caf74e0604f994c1831a5867055b2Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.