| 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-2024-49951: Bluetooth: MGMT: Fix possible crash on mgmt_index_removed |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: MGMT: Fix possible crash on mgmt_index_removed |
| |
| If mgmt_index_removed is called while there are commands queued on |
| cmd_sync it could lead to crashes like the bellow trace: |
| |
| 0x0000053D: __list_del_entry_valid_or_report+0x98/0xdc |
| 0x0000053D: mgmt_pending_remove+0x18/0x58 [bluetooth] |
| 0x0000053E: mgmt_remove_adv_monitor_complete+0x80/0x108 [bluetooth] |
| 0x0000053E: hci_cmd_sync_work+0xbc/0x164 [bluetooth] |
| |
| So while handling mgmt_index_removed this attempts to dequeue |
| commands passed as user_data to cmd_sync. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49951 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c and fixed in 6.1.120 with commit 19b40ca62607cef78369549d1af091f2fd558931 |
| Issue introduced in 6.0 with commit 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c and fixed in 6.6.55 with commit 4883296505aa7e4863c6869b689afb6005633b23 |
| Issue introduced in 6.0 with commit 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c and fixed in 6.10.14 with commit 0cc47233af35fb5f10b5e6a027cb4ccd480caf9a |
| Issue introduced in 6.0 with commit 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c and fixed in 6.11.3 with commit 8c3f7943a29145d8a2d8e24893762f7673323eae |
| Issue introduced in 6.0 with commit 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c and fixed in 6.12 with commit f53e1c9c726d83092167f2226f32bd3b73f26c21 |
| |
| 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-2024-49951 |
| 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/mgmt.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/19b40ca62607cef78369549d1af091f2fd558931 |
| https://git.kernel.org/stable/c/4883296505aa7e4863c6869b689afb6005633b23 |
| https://git.kernel.org/stable/c/0cc47233af35fb5f10b5e6a027cb4ccd480caf9a |
| https://git.kernel.org/stable/c/8c3f7943a29145d8a2d8e24893762f7673323eae |
| https://git.kernel.org/stable/c/f53e1c9c726d83092167f2226f32bd3b73f26c21 |
