| 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-2024-26667: drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup |
| |
| The commit 8b45a26f2ba9 ("drm/msm/dpu: reserve cdm blocks for writeback |
| in case of YUV output") introduced a smatch warning about another |
| conditional block in dpu_encoder_helper_phys_cleanup() which had assumed |
| hw_pp will always be valid which may not necessarily be true. |
| |
| Lets fix the other conditional block by making sure hw_pp is valid |
| before dereferencing it. |
| |
| Patchwork: https://patchwork.freedesktop.org/patch/574878/ |
| |
| The Linux kernel CVE team has assigned CVE-2024-26667 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit ae4d721ce10057a4aa9f0d253e0d460518a9ef75 and fixed in 6.1.78 with commit fb8bfc6ea3cd8c5ac3d35711d064e2f6646aec17 |
| Issue introduced in 5.19 with commit ae4d721ce10057a4aa9f0d253e0d460518a9ef75 and fixed in 6.6.17 with commit 79592a6e7bdc1d05460c95f891f5e5263a107af8 |
| Issue introduced in 5.19 with commit ae4d721ce10057a4aa9f0d253e0d460518a9ef75 and fixed in 6.7.5 with commit eb4f56f3ff5799ca754ae6d811803a63fe25a4a2 |
| Issue introduced in 5.19 with commit ae4d721ce10057a4aa9f0d253e0d460518a9ef75 and fixed in 6.8 with commit 7f3d03c48b1eb6bc45ab20ca98b8b11be25f9f52 |
| |
| 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-2024-26667 |
| 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/dpu1/dpu_encoder.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/fb8bfc6ea3cd8c5ac3d35711d064e2f6646aec17 |
| https://git.kernel.org/stable/c/79592a6e7bdc1d05460c95f891f5e5263a107af8 |
| https://git.kernel.org/stable/c/eb4f56f3ff5799ca754ae6d811803a63fe25a4a2 |
| https://git.kernel.org/stable/c/7f3d03c48b1eb6bc45ab20ca98b8b11be25f9f52 |
