| 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-2021-47403: ipack: ipoctal: fix module reference leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipack: ipoctal: fix module reference leak |
| |
| A reference to the carrier module was taken on every open but was only |
| released once when the final reference to the tty struct was dropped. |
| |
| Fix this by taking the module reference and initialising the tty driver |
| data when installing the tty. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47403 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 4.4.286 with commit 31398849b84ebae0d43a1cf379cb9895597f221a |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 4.9.285 with commit c0adb5a947dec6cff7050ec56d78ecd3916f9ce6 |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 4.14.249 with commit dde4c1429b97383689f755ce92b4ed1e84a9c92b |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 4.19.209 with commit 9c5b77a7ffc983b2429ce158b50497c5d3c86a69 |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 5.4.151 with commit 3253c87e1e5bc0107aab773af2f135ebccf38666 |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 5.10.71 with commit 7cea848678470daadbfdaa6a112b823c290f900c |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 5.14.10 with commit 811178f296b16af30264def74c8d2179a72d5562 |
| Issue introduced in 3.18 with commit 82a82340bab6c251e0705339f60763718eaa2a22 and fixed in 5.15 with commit bb8a4fcb2136508224c596a7e665bdba1d7c3c27 |
| |
| 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-2021-47403 |
| 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: |
| drivers/ipack/devices/ipoctal.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/31398849b84ebae0d43a1cf379cb9895597f221a |
| https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6 |
| https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b |
| https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69 |
| https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666 |
| https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c |
| https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562 |
| https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27 |
