| 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-2024-58009: Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc |
| |
| A NULL sock pointer is passed into l2cap_sock_alloc() when it is called |
| from l2cap_sock_new_connection_cb() and the error handling paths should |
| also be aware of it. |
| |
| Seemingly a more elegant solution would be to swap bt_sock_alloc() and |
| l2cap_chan_create() calls since they are not interdependent to that moment |
| but then l2cap_chan_create() adds the soon to be deallocated and still |
| dummy-initialized channel to the global list accessible by many L2CAP |
| paths. The channel would be removed from the list in short period of time |
| but be a bit more straight-forward here and just check for NULL instead of |
| changing the order of function calls. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE static |
| analysis tool. |
| |
| The Linux kernel CVE team has assigned CVE-2024-58009 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4.287 with commit f6ad641646b67f29c7578dcd6c25813c7dcbf51e and fixed in 5.4.291 with commit a9a7672fc1a0fe18502493936ccb06413ab89ea6 |
| Issue introduced in 5.10.231 with commit daa13175a6dea312a76099066cb4cbd4fc959a84 and fixed in 5.10.235 with commit 8e605f580a97530e5a3583beea458a3fa4cbefbd |
| Issue introduced in 5.15.174 with commit a8677028dd5123e5e525b8195483994d87123de4 and fixed in 5.15.179 with commit cf601a24120c674cd7c907ea695f92617af6abd0 |
| Issue introduced in 6.1.120 with commit bb2f2342a6ddf7c04f9aefbbfe86104cd138e629 and fixed in 6.1.129 with commit 297ce7f544aa675b0d136d788cad0710cdfb0785 |
| Issue introduced in 6.6.66 with commit 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6 and fixed in 6.6.78 with commit 245d48c1ba3e7a1779c2f4cbc6f581ddc8a78e22 |
| Issue introduced in 6.12.5 with commit 61686abc2f3c2c67822aa23ce6f160467ec83d35 and fixed in 6.12.14 with commit 691218a50c3139f7f57ffa79fb89d932eda9571e |
| Issue introduced in 6.13 with commit 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 and fixed in 6.13.3 with commit 49c0d55d59662430f1829ae85b969619573d0fa1 |
| Issue introduced in 6.13 with commit 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 and fixed in 6.14 with commit 5f397409f8ee5bc82901eeaf799e1cbc4f8edcf1 |
| |
| 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-2024-58009 |
| 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/l2cap_sock.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/a9a7672fc1a0fe18502493936ccb06413ab89ea6 |
| https://git.kernel.org/stable/c/8e605f580a97530e5a3583beea458a3fa4cbefbd |
| https://git.kernel.org/stable/c/cf601a24120c674cd7c907ea695f92617af6abd0 |
| https://git.kernel.org/stable/c/297ce7f544aa675b0d136d788cad0710cdfb0785 |
| https://git.kernel.org/stable/c/245d48c1ba3e7a1779c2f4cbc6f581ddc8a78e22 |
| https://git.kernel.org/stable/c/691218a50c3139f7f57ffa79fb89d932eda9571e |
| https://git.kernel.org/stable/c/49c0d55d59662430f1829ae85b969619573d0fa1 |
| https://git.kernel.org/stable/c/5f397409f8ee5bc82901eeaf799e1cbc4f8edcf1 |
