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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.

PUBLISHED Reserved 2025-12-30 | Published 2025-12-30 | Updated 2025-12-30 | Assigner Linux

Product status

Default status
unaffected

7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c (git) before 0d4d6b083da9b033ddccef72d77f373c819ae3ea
affected

7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c (git) before bf00c2c8f6254f44ac041aa9a311ae9e0caf692b
affected

7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c (git) before de6dfcefd107667ce2dbedf4d9337f5ed557a4a1
affected

Default status
affected

6.0
affected

Any version before 6.0
unaffected

6.1.42 (semver)
unaffected

6.4.7 (semver)
unaffected

6.5 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/0d4d6b083da9b033ddccef72d77f373c819ae3ea

git.kernel.org/...c/bf00c2c8f6254f44ac041aa9a311ae9e0caf692b

git.kernel.org/...c/de6dfcefd107667ce2dbedf4d9337f5ed557a4a1

cve.org (CVE-2023-54210)

nvd.nist.gov (CVE-2023-54210)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.