| 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-2021-47522: HID: bigbenff: prevent null pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| HID: bigbenff: prevent null pointer dereference |
| |
| When emulating the device through uhid, there is a chance we don't have |
| output reports and so report_field is null. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47522 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.165 with commit 8e0ceff632f48175ec7fb4706129c55ca8a7c7bd |
| Fixed in 5.10.85 with commit 6272b17001e6fdcf7b4a16206287010a1523fa6e |
| Fixed in 5.15.8 with commit 58f15f5ae7786c824868f3a7e093859b74669ce7 |
| Fixed in 5.16 with commit 918aa1ef104d286d16b9e7ef139a463ac7a296f0 |
| |
| 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-2021-47522 |
| 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-bigbenff.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/8e0ceff632f48175ec7fb4706129c55ca8a7c7bd |
| https://git.kernel.org/stable/c/6272b17001e6fdcf7b4a16206287010a1523fa6e |
| https://git.kernel.org/stable/c/58f15f5ae7786c824868f3a7e093859b74669ce7 |
| https://git.kernel.org/stable/c/918aa1ef104d286d16b9e7ef139a463ac7a296f0 |
