| 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-2024-49571: net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg |
| |
| When receiving proposal msg in server, the field iparea_offset |
| and the field ipv6_prefixes_cnt in proposal msg are from the |
| remote client and can not be fully trusted. Especially the |
| field iparea_offset, once exceed the max value, there has the |
| chance to access wrong address, and crash may happen. |
| |
| This patch checks iparea_offset and ipv6_prefixes_cnt before using them. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49571 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 5.10.233 with commit 846bada23bfcdeb83621b045ed85dc06c7833ff0 |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 5.15.176 with commit f10635268a0a49ee902a3b63b5dbb76f4fed498e |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 6.1.122 with commit 62056d1592e63d85e82357ee2ae6a6a294f440b0 |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 6.6.68 with commit 91a7c27c1444ed4677b83fd5308d2cf03f5f0851 |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 6.12.7 with commit 47ce46349672a7e0c361bfe39ed0b22e824ef4fb |
| Issue introduced in 4.16 with commit e7b7a64a8493d47433fd003efbe6543e3f676294 and fixed in 6.13 with commit a29e220d3c8edbf0e1beb0f028878a4a85966556 |
| |
| 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-2024-49571 |
| 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: |
| net/smc/af_smc.c |
| net/smc/smc_clc.c |
| net/smc/smc_clc.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/846bada23bfcdeb83621b045ed85dc06c7833ff0 |
| https://git.kernel.org/stable/c/f10635268a0a49ee902a3b63b5dbb76f4fed498e |
| https://git.kernel.org/stable/c/62056d1592e63d85e82357ee2ae6a6a294f440b0 |
| https://git.kernel.org/stable/c/91a7c27c1444ed4677b83fd5308d2cf03f5f0851 |
| https://git.kernel.org/stable/c/47ce46349672a7e0c361bfe39ed0b22e824ef4fb |
| https://git.kernel.org/stable/c/a29e220d3c8edbf0e1beb0f028878a4a85966556 |
