| 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-2024-49865: drm/xe/vm: move xa_alloc to prevent UAF |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/xe/vm: move xa_alloc to prevent UAF |
| |
| Evil user can guess the next id of the vm before the ioctl completes and |
| then call vm destroy ioctl to trigger UAF since create ioctl is still |
| referencing the same vm. Move the xa_alloc all the way to the end to |
| prevent this. |
| |
| v2: |
| - Rebase |
| |
| (cherry picked from commit dcfd3971327f3ee92765154baebbaece833d3ca9) |
| |
| The Linux kernel CVE team has assigned CVE-2024-49865 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.11.3 with commit 09cf8901fc0225898311b375cfcc67bae37ed5da |
| Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.12 with commit 74231870cf4976f69e83aa24f48edb16619f652f |
| |
| 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-2024-49865 |
| 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/xe/xe_vm.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/09cf8901fc0225898311b375cfcc67bae37ed5da |
| https://git.kernel.org/stable/c/74231870cf4976f69e83aa24f48edb16619f652f |
