| 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-2024-46792: riscv: misaligned: Restrict user access to kernel memory |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| riscv: misaligned: Restrict user access to kernel memory |
| |
| raw_copy_{to,from}_user() do not call access_ok(), so this code allowed |
| userspace to access any virtual memory address. |
| |
| The Linux kernel CVE team has assigned CVE-2024-46792 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit 7c83232161f609bbc452a1255f823f41afc411dd and fixed in 6.10.10 with commit a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c |
| Issue introduced in 6.7 with commit 7c83232161f609bbc452a1255f823f41afc411dd and fixed in 6.11 with commit b686ecdeacf6658e1348c1a32a08e2e72f7c0f00 |
| |
| 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-2024-46792 |
| 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: |
| arch/riscv/kernel/traps_misaligned.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/a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c |
| https://git.kernel.org/stable/c/b686ecdeacf6658e1348c1a32a08e2e72f7c0f00 |
