| 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-2024-49992: drm/stm: Avoid use-after-free issues with crtc and plane |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/stm: Avoid use-after-free issues with crtc and plane |
| |
| ltdc_load() calls functions drm_crtc_init_with_planes(), |
| drm_universal_plane_init() and drm_encoder_init(). These functions |
| should not be called with parameters allocated with devm_kzalloc() |
| to avoid use-after-free issues [1]. |
| |
| Use allocations managed by the DRM framework. |
| |
| Found by Linux Verification Center (linuxtesting.org). |
| |
| [1] |
| https://lore.kernel.org/lkml/u366i76e3qhh3ra5oxrtngjtm2u5lterkekcz6y2jkndhuxzli@diujon4h7qwb/ |
| |
| The Linux kernel CVE team has assigned CVE-2024-49992 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.1.113 with commit d02611ff001454358be6910cb926799e2d818716 |
| Fixed in 6.6.55 with commit 0a1741d10da29aa84955ef89ae9a03c4b6038657 |
| Fixed in 6.10.14 with commit 454e5d7e671946698af0f201e48469e5ddb42851 |
| Fixed in 6.11.3 with commit b22eec4b57d04befa90e8554ede34e6c67257606 |
| Fixed in 6.12 with commit 19dd9780b7ac673be95bf6fd6892a184c9db611f |
| |
| 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-2024-49992 |
| 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/stm/drv.c |
| drivers/gpu/drm/stm/ltdc.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/d02611ff001454358be6910cb926799e2d818716 |
| https://git.kernel.org/stable/c/0a1741d10da29aa84955ef89ae9a03c4b6038657 |
| https://git.kernel.org/stable/c/454e5d7e671946698af0f201e48469e5ddb42851 |
| https://git.kernel.org/stable/c/b22eec4b57d04befa90e8554ede34e6c67257606 |
| https://git.kernel.org/stable/c/19dd9780b7ac673be95bf6fd6892a184c9db611f |
