| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49136: Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set |
| |
| hci_cmd_sync_queue shall return an error if HCI_UNREGISTER flag has |
| been set as that means hci_unregister_dev has been called so it will |
| likely cause a uaf after the timeout as the hdev will be freed. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49136 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.17 with commit 6a98e3836fa2077b169f10a35c2ca9952d53f987 and fixed in 5.17.3 with commit 1c69ef84a808676cceb69210addf5df45b741323 |
| Issue introduced in 5.17 with commit 6a98e3836fa2077b169f10a35c2ca9952d53f987 and fixed in 5.18 with commit 0b94f2651f56b9e4aa5f012b0d7eb57308c773cf |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-49136 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/bluetooth/hci_sync.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/1c69ef84a808676cceb69210addf5df45b741323 |
| https://git.kernel.org/stable/c/0b94f2651f56b9e4aa5f012b0d7eb57308c773cf |
