| 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-2024-56605: Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() |
| |
| bt_sock_alloc() allocates the sk object and attaches it to the provided |
| sock object. On error l2cap_sock_alloc() frees the sk object, but the |
| dangling pointer is still attached to the sock object, which may create |
| use-after-free in other code. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56605 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.287 with commit f6ad641646b67f29c7578dcd6c25813c7dcbf51e |
| Fixed in 5.10.231 with commit daa13175a6dea312a76099066cb4cbd4fc959a84 |
| Fixed in 5.15.174 with commit a8677028dd5123e5e525b8195483994d87123de4 |
| Fixed in 6.1.120 with commit bb2f2342a6ddf7c04f9aefbbfe86104cd138e629 |
| Fixed in 6.6.66 with commit 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6 |
| Fixed in 6.12.5 with commit 61686abc2f3c2c67822aa23ce6f160467ec83d35 |
| Fixed in 6.13 with commit 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 |
| |
| 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-2024-56605 |
| 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/f6ad641646b67f29c7578dcd6c25813c7dcbf51e |
| https://git.kernel.org/stable/c/daa13175a6dea312a76099066cb4cbd4fc959a84 |
| https://git.kernel.org/stable/c/a8677028dd5123e5e525b8195483994d87123de4 |
| https://git.kernel.org/stable/c/bb2f2342a6ddf7c04f9aefbbfe86104cd138e629 |
| https://git.kernel.org/stable/c/8ad09ddc63ace3950ac43db6fbfe25b40f589dd6 |
| https://git.kernel.org/stable/c/61686abc2f3c2c67822aa23ce6f160467ec83d35 |
| https://git.kernel.org/stable/c/7c4f78cdb8e7501e9f92d291a7d956591bf73be9 |
