| 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-2023-52677: riscv: Check if the code to patch lies in the exit section |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| riscv: Check if the code to patch lies in the exit section |
| |
| Otherwise we fall through to vmalloc_to_page() which panics since the |
| address does not lie in the vmalloc region. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52677 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.7 with commit 043cb41a85de1c0e944da61ad7a264960e22c865 and fixed in 5.15.148 with commit 938f70d14618ec72e10d6fcf8a546134136d7c13 |
| Issue introduced in 5.7 with commit 043cb41a85de1c0e944da61ad7a264960e22c865 and fixed in 6.1.75 with commit 890cfe5337e0aaf03ece1429db04d23c88da72e7 |
| Issue introduced in 5.7 with commit 043cb41a85de1c0e944da61ad7a264960e22c865 and fixed in 6.6.14 with commit 8db56df4a954b774bdc68917046a685a9fa2e4bc |
| Issue introduced in 5.7 with commit 043cb41a85de1c0e944da61ad7a264960e22c865 and fixed in 6.7.2 with commit 1d7a03052846f34d624d0ab41a879adf5e85c85f |
| Issue introduced in 5.7 with commit 043cb41a85de1c0e944da61ad7a264960e22c865 and fixed in 6.8 with commit 420370f3ae3d3b883813fd3051a38805160b2b9f |
| |
| 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-2023-52677 |
| 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/include/asm/sections.h |
| arch/riscv/kernel/patch.c |
| arch/riscv/kernel/vmlinux-xip.lds.S |
| arch/riscv/kernel/vmlinux.lds.S |
| |
| |
| 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/938f70d14618ec72e10d6fcf8a546134136d7c13 |
| https://git.kernel.org/stable/c/890cfe5337e0aaf03ece1429db04d23c88da72e7 |
| https://git.kernel.org/stable/c/8db56df4a954b774bdc68917046a685a9fa2e4bc |
| https://git.kernel.org/stable/c/1d7a03052846f34d624d0ab41a879adf5e85c85f |
| https://git.kernel.org/stable/c/420370f3ae3d3b883813fd3051a38805160b2b9f |
