| 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-2022-49431: powerpc/iommu: Add missing of_node_put in iommu_init_early_dart |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| powerpc/iommu: Add missing of_node_put in iommu_init_early_dart |
| |
| The device_node pointer is returned by of_find_compatible_node |
| with refcount incremented. We should use of_node_put() to avoid |
| the refcount leak. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49431 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.198 with commit cb4f2dc513e99c5d0485661f114e4dda73612d10 |
| Fixed in 5.10.121 with commit dfc308d6f29aa28463deb9a12278a85a382385ca |
| Fixed in 5.15.46 with commit df6d8b689252c0acc0448d4ae3d33f2d6db048ab |
| Fixed in 5.17.14 with commit 8657e8ea23325949091da72453ba84fb73cc2bd9 |
| Fixed in 5.18.3 with commit 7e3f1dfb9e21733d7276bc9ccea4daada163f2ba |
| Fixed in 5.19 with commit 57b742a5b8945118022973e6416b71351df512fb |
| |
| 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-2022-49431 |
| 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: |
| arch/powerpc/sysdev/dart_iommu.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/cb4f2dc513e99c5d0485661f114e4dda73612d10 |
| https://git.kernel.org/stable/c/dfc308d6f29aa28463deb9a12278a85a382385ca |
| https://git.kernel.org/stable/c/df6d8b689252c0acc0448d4ae3d33f2d6db048ab |
| https://git.kernel.org/stable/c/8657e8ea23325949091da72453ba84fb73cc2bd9 |
| https://git.kernel.org/stable/c/7e3f1dfb9e21733d7276bc9ccea4daada163f2ba |
| https://git.kernel.org/stable/c/57b742a5b8945118022973e6416b71351df512fb |
