| 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-2021-47404: HID: betop: fix slab-out-of-bounds Write in betop_probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| HID: betop: fix slab-out-of-bounds Write in betop_probe |
| |
| Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. |
| The problem is the driver assumes the device must have an input report but |
| some malicious devices violate this assumption. |
| |
| So this patch checks hid_device's input is non empty before it's been used. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47404 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.4.286 with commit a4faa7153b87fbcfe4be15f4278676f79ca6e019 |
| Fixed in 4.9.285 with commit 6fc4476dda58f6c00097c7ddec3b772513f57525 |
| Fixed in 4.14.249 with commit 1c83c38dec83d57bc18d0c01d82c413d3b34ccb9 |
| Fixed in 4.19.209 with commit bb8b72374db69afa25a5b65cf1c092860c6fe914 |
| Fixed in 5.4.151 with commit fe9bb925e7096509711660d39c0493a1546e9550 |
| Fixed in 5.10.71 with commit dedfc35a2de2bae9fa3da8210a05bfd515f83fee |
| Fixed in 5.14.10 with commit 708107b80aa616976d1c5fa60ac0c1390749db5e |
| Fixed in 5.15 with commit 1e4ce418b1cb1a810256b5fb3fd33d22d1325993 |
| |
| 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-2021-47404 |
| 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/hid/hid-betopff.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/a4faa7153b87fbcfe4be15f4278676f79ca6e019 |
| https://git.kernel.org/stable/c/6fc4476dda58f6c00097c7ddec3b772513f57525 |
| https://git.kernel.org/stable/c/1c83c38dec83d57bc18d0c01d82c413d3b34ccb9 |
| https://git.kernel.org/stable/c/bb8b72374db69afa25a5b65cf1c092860c6fe914 |
| https://git.kernel.org/stable/c/fe9bb925e7096509711660d39c0493a1546e9550 |
| https://git.kernel.org/stable/c/dedfc35a2de2bae9fa3da8210a05bfd515f83fee |
| https://git.kernel.org/stable/c/708107b80aa616976d1c5fa60ac0c1390749db5e |
| https://git.kernel.org/stable/c/1e4ce418b1cb1a810256b5fb3fd33d22d1325993 |
