| 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-2022-49693: drm/msm/mdp4: Fix refcount leak in mdp4_modeset_init_intf |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/msm/mdp4: Fix refcount leak in mdp4_modeset_init_intf |
| |
| of_graph_get_remote_node() returns remote device node pointer with |
| refcount incremented, we should use of_node_put() on it |
| when not need anymore. |
| Add missing of_node_put() to avoid refcount leak. |
| |
| Patchwork: https://patchwork.freedesktop.org/patch/488473/ |
| |
| The Linux kernel CVE team has assigned CVE-2022-49693 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.12 with commit 86418f90a4c1a0073db65d8a1e2bf94421117a60 and fixed in 5.4.202 with commit d1592d3e362cc59b29f15019707b16c695d70ca3 |
| Issue introduced in 4.12 with commit 86418f90a4c1a0073db65d8a1e2bf94421117a60 and fixed in 5.10.127 with commit d16a4339825e64f9ddcdff5277982d640bae933b |
| Issue introduced in 4.12 with commit 86418f90a4c1a0073db65d8a1e2bf94421117a60 and fixed in 5.15.51 with commit 3c39a17197733bc37786ed68c83267c2f491840b |
| Issue introduced in 4.12 with commit 86418f90a4c1a0073db65d8a1e2bf94421117a60 and fixed in 5.18.8 with commit d607da76fd2b1cf1d377af9d9b7c6f8fecbb0e1d |
| Issue introduced in 4.12 with commit 86418f90a4c1a0073db65d8a1e2bf94421117a60 and fixed in 5.19 with commit b9cc4598607cb7f7eae5c75fc1e3209cd52ff5e0 |
| |
| 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-2022-49693 |
| 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/gpu/drm/msm/disp/mdp4/mdp4_kms.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/d1592d3e362cc59b29f15019707b16c695d70ca3 |
| https://git.kernel.org/stable/c/d16a4339825e64f9ddcdff5277982d640bae933b |
| https://git.kernel.org/stable/c/3c39a17197733bc37786ed68c83267c2f491840b |
| https://git.kernel.org/stable/c/d607da76fd2b1cf1d377af9d9b7c6f8fecbb0e1d |
| https://git.kernel.org/stable/c/b9cc4598607cb7f7eae5c75fc1e3209cd52ff5e0 |
