| 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-2024-27042: drm/amdgpu: Fix potential out-of-bounds access in 'amdgpu_discovery_reg_base_init()' |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdgpu: Fix potential out-of-bounds access in 'amdgpu_discovery_reg_base_init()' |
| |
| The issue arises when the array 'adev->vcn.vcn_config' is accessed |
| before checking if the index 'adev->vcn.num_vcn_inst' is within the |
| bounds of the array. |
| |
| The fix involves moving the bounds check before the array access. This |
| ensures that 'adev->vcn.num_vcn_inst' is within the bounds of the array |
| before it is used as an index. |
| |
| Fixes the below: |
| drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c:1289 amdgpu_discovery_reg_base_init() error: testing array offset 'adev->vcn.num_vcn_inst' after use. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27042 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit a0ccc717c4ab3ef572f023fdceffb4b6df496a0d and fixed in 6.6.23 with commit 8f3e68c6a3fff53c2240762a47a0045d89371775 |
| Issue introduced in 5.19 with commit a0ccc717c4ab3ef572f023fdceffb4b6df496a0d and fixed in 6.7.11 with commit b33d4af102b9c1f7a83d3f0ad3cab7d2bab8f058 |
| Issue introduced in 5.19 with commit a0ccc717c4ab3ef572f023fdceffb4b6df496a0d and fixed in 6.8.2 with commit 8db10cee51e3e11a6658742465edc21986cf1e8d |
| Issue introduced in 5.19 with commit a0ccc717c4ab3ef572f023fdceffb4b6df496a0d and fixed in 6.9 with commit cdb637d339572398821204a1142d8d615668f1e9 |
| |
| 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-2024-27042 |
| 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/amdgpu/amdgpu_discovery.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/8f3e68c6a3fff53c2240762a47a0045d89371775 |
| https://git.kernel.org/stable/c/b33d4af102b9c1f7a83d3f0ad3cab7d2bab8f058 |
| https://git.kernel.org/stable/c/8db10cee51e3e11a6658742465edc21986cf1e8d |
| https://git.kernel.org/stable/c/cdb637d339572398821204a1142d8d615668f1e9 |
