| 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-2024-50288: media: vivid: fix buffer overwrite when using > 32 buffers |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: vivid: fix buffer overwrite when using > 32 buffers |
| |
| The maximum number of buffers that can be requested was increased to |
| 64 for the video capture queue. But video capture used a must_blank |
| array that was still sized for 32 (VIDEO_MAX_FRAME). This caused an |
| out-of-bounds write when using buffer indices >= 32. |
| |
| Create a new define MAX_VID_CAP_BUFFERS that is used to access the |
| must_blank array and set max_num_buffers for the video capture queue. |
| |
| This solves a crash reported by: |
| |
| https://bugzilla.kernel.org/show_bug.cgi?id=219258 |
| |
| The Linux kernel CVE team has assigned CVE-2024-50288 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit cea70ed416b428f8214be196d62cc7ffaa11f1b8 and fixed in 6.11.8 with commit e6bacd8f2178b22859fe6d9f755f19dfcd9d3862 |
| Issue introduced in 6.8 with commit cea70ed416b428f8214be196d62cc7ffaa11f1b8 and fixed in 6.12 with commit 96d8569563916fe2f8fe17317e20e43f54f9ba4b |
| |
| 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-2024-50288 |
| 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/media/test-drivers/vivid/vivid-core.c |
| drivers/media/test-drivers/vivid/vivid-core.h |
| drivers/media/test-drivers/vivid/vivid-ctrls.c |
| drivers/media/test-drivers/vivid/vivid-vid-cap.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/e6bacd8f2178b22859fe6d9f755f19dfcd9d3862 |
| https://git.kernel.org/stable/c/96d8569563916fe2f8fe17317e20e43f54f9ba4b |
