| 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-2021-47380: HID: amd_sfh: Fix potential NULL pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| HID: amd_sfh: Fix potential NULL pointer dereference |
| |
| devm_add_action_or_reset() can suddenly invoke amd_mp2_pci_remove() at |
| registration that will cause NULL pointer dereference since |
| corresponding data is not initialized yet. The patch moves |
| initialization of data before devm_add_action_or_reset(). |
| |
| Found by Linux Driver Verification project (linuxtesting.org). |
| |
| [jkosina@suse.cz: rebase] |
| |
| The Linux kernel CVE team has assigned CVE-2021-47380 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.11 with commit 4f567b9f8141a86c7d878fadf136e5d1408e3e61 and fixed in 5.14.10 with commit 283e4bee701dfcd409dd293f19a268bb2bc8ff38 |
| Issue introduced in 5.11 with commit 4f567b9f8141a86c7d878fadf136e5d1408e3e61 and fixed in 5.15 with commit d46ef750ed58cbeeba2d9a55c99231c30a172764 |
| |
| 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-2021-47380 |
| 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/amd-sfh-hid/amd_sfh_pcie.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/283e4bee701dfcd409dd293f19a268bb2bc8ff38 |
| https://git.kernel.org/stable/c/d46ef750ed58cbeeba2d9a55c99231c30a172764 |
