| 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-2024-38577: rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow |
| |
| There is a possibility of buffer overflow in |
| show_rcu_tasks_trace_gp_kthread() if counters, passed |
| to sprintf() are huge. Counter numbers, needed for this |
| are unrealistically high, but buffer overflow is still |
| possible. |
| |
| Use snprintf() with buffer size instead of sprintf(). |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-38577 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 5.10.226 with commit 17c43211d45f13d1badea3942b76bf16bcc49281 |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 5.15.167 with commit af7b560c88fb420099e29890aa682b8a3efc8784 |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 6.1.93 with commit 08186d0c5fb64a1cc4b43e009314ee6b173ed222 |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 6.6.33 with commit 32d988f48ed287e676a29a15ac30701c35849aec |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 6.8.12 with commit 6593d857ce5b5b802fb73d8091ac9c84b92c1697 |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 6.9.3 with commit 1a240e138071b25944ded0f5b3e357aa99fabcb7 |
| Issue introduced in 5.8 with commit edf3775f0ad66879796f594983163f672c4bf1a2 and fixed in 6.10 with commit cc5645fddb0ce28492b15520306d092730dffa48 |
| |
| 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-2024-38577 |
| 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: |
| kernel/rcu/tasks.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/17c43211d45f13d1badea3942b76bf16bcc49281 |
| https://git.kernel.org/stable/c/af7b560c88fb420099e29890aa682b8a3efc8784 |
| https://git.kernel.org/stable/c/08186d0c5fb64a1cc4b43e009314ee6b173ed222 |
| https://git.kernel.org/stable/c/32d988f48ed287e676a29a15ac30701c35849aec |
| https://git.kernel.org/stable/c/6593d857ce5b5b802fb73d8091ac9c84b92c1697 |
| https://git.kernel.org/stable/c/1a240e138071b25944ded0f5b3e357aa99fabcb7 |
| https://git.kernel.org/stable/c/cc5645fddb0ce28492b15520306d092730dffa48 |
