| 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-2022-48718: drm: mxsfb: Fix NULL pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm: mxsfb: Fix NULL pointer dereference |
| |
| mxsfb should not ever dereference the NULL pointer which |
| drm_atomic_get_new_bridge_state is allowed to return. |
| Assume a fixed format instead. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48718 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit b776b0f00f246d093c595bac4453c6e51541d5c5 and fixed in 5.15.27 with commit 86a337bb803040e4401b87c974a7fb92efe3d0e1 |
| Issue introduced in 5.15 with commit b776b0f00f246d093c595bac4453c6e51541d5c5 and fixed in 5.16.8 with commit 6f9267e01cca749137349d8ffb0d0ebbadf567f4 |
| Issue introduced in 5.15 with commit b776b0f00f246d093c595bac4453c6e51541d5c5 and fixed in 5.17 with commit 622c9a3a7868e1eeca39c55305ca3ebec4742b64 |
| |
| 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-2022-48718 |
| 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/mxsfb/mxsfb_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/86a337bb803040e4401b87c974a7fb92efe3d0e1 |
| https://git.kernel.org/stable/c/6f9267e01cca749137349d8ffb0d0ebbadf567f4 |
| https://git.kernel.org/stable/c/622c9a3a7868e1eeca39c55305ca3ebec4742b64 |
