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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2023-54210

Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor() KASAN reports that there's a use-after-free in hci_remove_adv_monitor(). Trawling through the disassembly, you can see that the complaint is from the access in bt_dev_dbg() under the HCI_ADV_MONITOR_EXT_MSFT case. The problem case happens because msft_remove_monitor() can end up freeing the monitor structure. Specifically: hci_remove_adv_monitor() -> msft_remove_monitor() -> msft_remove_monitor_sync() -> msft_le_cancel_monitor_advertisement_cb() -> hci_free_adv_monitor() Let's fix the problem by just stashing the relevant data when it's still valid.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c to < 0d4d6b083da9b033ddccef72d77f373c819ae3eaaffected
  • 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c to < bf00c2c8f6254f44ac041aa9a311ae9e0caf692baffected
  • 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c to < de6dfcefd107667ce2dbedf4d9337f5ed557a4a1affected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.1.42 to ≤ 6.1.*unaffected
  • 6.4.7 to ≤ 6.4.*unaffected
  • 6.5 to ≤ *unaffected

References