| 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-2024-42117: drm/amd/display: ASSERT when failing to find index by plane/stream id |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: ASSERT when failing to find index by plane/stream id |
| |
| [WHY] |
| find_disp_cfg_idx_by_plane_id and find_disp_cfg_idx_by_stream_id returns |
| an array index and they return -1 when not found; however, -1 is not a |
| valid index number. |
| |
| [HOW] |
| When this happens, call ASSERT(), and return a positive number (which is |
| fewer than callers' array size) instead. |
| |
| This fixes 4 OVERRUN and 2 NEGATIVE_RETURNS issues reported by Coverity. |
| |
| The Linux kernel CVE team has assigned CVE-2024-42117 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit 7966f319c66d9468623c6a6a017ecbc0dd79be75 and fixed in 6.9.9 with commit a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3 |
| Issue introduced in 6.7 with commit 7966f319c66d9468623c6a6a017ecbc0dd79be75 and fixed in 6.10 with commit 01eb50e53c1ce505bf449348d433181310288765 |
| |
| 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-2024-42117 |
| 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/amd/display/dc/dml2/dml2_dc_resource_mgmt.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/a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3 |
| https://git.kernel.org/stable/c/01eb50e53c1ce505bf449348d433181310288765 |
