| 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-2024-36018: nouveau/uvmm: fix addr/range calcs for remap operations |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nouveau/uvmm: fix addr/range calcs for remap operations |
| |
| dEQP-VK.sparse_resources.image_rebind.2d_array.r64i.128_128_8 |
| was causing a remap operation like the below. |
| |
| op_remap: prev: 0000003fffed0000 00000000000f0000 00000000a5abd18a 0000000000000000 |
| op_remap: next: |
| op_remap: unmap: 0000003fffed0000 0000000000100000 0 |
| op_map: map: 0000003ffffc0000 0000000000010000 000000005b1ba33c 00000000000e0000 |
| |
| This was resulting in an unmap operation from 0x3fffed0000+0xf0000, 0x100000 |
| which was corrupting the pagetables and oopsing the kernel. |
| |
| Fixes the prev + unmap range calcs to use start/end and map back to addr/range. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36018 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6 with commit b88baab828713ce0b49b185444b2ee83bed373a8 and fixed in 6.6.26 with commit 692a51bebf4552bdf0a79ccd68d291182a26a569 |
| Issue introduced in 6.6 with commit b88baab828713ce0b49b185444b2ee83bed373a8 and fixed in 6.8.5 with commit 0c16020d2b69a602c8ae6a1dd2aac9a3023249d6 |
| Issue introduced in 6.6 with commit b88baab828713ce0b49b185444b2ee83bed373a8 and fixed in 6.9 with commit be141849ec00ef39935bf169c0f194ac70bf85ce |
| |
| 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-2024-36018 |
| 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/nouveau/nouveau_uvmm.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/692a51bebf4552bdf0a79ccd68d291182a26a569 |
| https://git.kernel.org/stable/c/0c16020d2b69a602c8ae6a1dd2aac9a3023249d6 |
| https://git.kernel.org/stable/c/be141849ec00ef39935bf169c0f194ac70bf85ce |
