| 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-2024-26795: riscv: Sparse-Memory/vmemmap out-of-bounds fix |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| riscv: Sparse-Memory/vmemmap out-of-bounds fix |
| |
| Offset vmemmap so that the first page of vmemmap will be mapped |
| to the first page of physical memory in order to ensure that |
| vmemmap’s bounds will be respected during |
| pfn_to_page()/page_to_pfn() operations. |
| The conversion macros will produce correct SV39/48/57 addresses |
| for every possible/valid DRAM_BASE inside the physical memory limits. |
| |
| v2:Address Alex's comments |
| |
| The Linux kernel CVE team has assigned CVE-2024-26795 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 5.10.212 with commit 8af1c121b0102041809bc137ec600d1865eaeedd |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 5.15.151 with commit 5941a90c55d3bfba732b32208d58d997600b44ef |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 6.1.81 with commit 8310080799b40fd9f2a8b808c657269678c149af |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 6.6.21 with commit a278d5c60f21aa15d540abb2f2da6e6d795c3e6e |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 6.7.9 with commit 2a1728c15ec4f45ed9248ae22f626541c179bfbe |
| Issue introduced in 5.4 with commit d95f1a542c3df396137afa217ef9bd39cb8931ca and fixed in 6.8 with commit a11dd49dcb9376776193e15641f84fcc1e5980c9 |
| |
| 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-2024-26795 |
| 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/pgtable.h |
| |
| |
| 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/8af1c121b0102041809bc137ec600d1865eaeedd |
| https://git.kernel.org/stable/c/5941a90c55d3bfba732b32208d58d997600b44ef |
| https://git.kernel.org/stable/c/8310080799b40fd9f2a8b808c657269678c149af |
| https://git.kernel.org/stable/c/a278d5c60f21aa15d540abb2f2da6e6d795c3e6e |
| https://git.kernel.org/stable/c/2a1728c15ec4f45ed9248ae22f626541c179bfbe |
| https://git.kernel.org/stable/c/a11dd49dcb9376776193e15641f84fcc1e5980c9 |
