| 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-2024-35988: riscv: Fix TASK_SIZE on 64-bit NOMMU |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| riscv: Fix TASK_SIZE on 64-bit NOMMU |
| |
| On NOMMU, userspace memory can come from anywhere in physical RAM. The |
| current definition of TASK_SIZE is wrong if any RAM exists above 4G, |
| causing spurious failures in the userspace access routines. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35988 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 5.10.216 with commit 04bf2e5f95c1a52e28a7567a507f926efe31c3b6 |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 5.15.158 with commit 52e8a42b11078d2aad4b9ba96503d77c7299168b |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 6.1.90 with commit 4201b8c8f2c32af321fb50867e68ac6c1cbed4be |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 6.6.30 with commit a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaa |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 6.8.9 with commit efdcfa554b6eb228943ef1dd4d023c606be647d2 |
| Issue introduced in 5.5 with commit 6bd33e1ece528f67646db33bf97406b747dafda0 and fixed in 6.9 with commit 6065e736f82c817c9a597a31ee67f0ce4628e948 |
| |
| 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-2024-35988 |
| 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/04bf2e5f95c1a52e28a7567a507f926efe31c3b6 |
| https://git.kernel.org/stable/c/52e8a42b11078d2aad4b9ba96503d77c7299168b |
| https://git.kernel.org/stable/c/4201b8c8f2c32af321fb50867e68ac6c1cbed4be |
| https://git.kernel.org/stable/c/a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaa |
| https://git.kernel.org/stable/c/efdcfa554b6eb228943ef1dd4d023c606be647d2 |
| https://git.kernel.org/stable/c/6065e736f82c817c9a597a31ee67f0ce4628e948 |
