| 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-2024-47408: net/smc: check smcd_v2_ext_offset when receiving proposal msg |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/smc: check smcd_v2_ext_offset when receiving proposal msg |
| |
| When receiving proposal msg in server, the field smcd_v2_ext_offset in |
| proposal msg is from the remote client and can not be fully trusted. |
| Once the value of smcd_v2_ext_offset exceed the max value, there has |
| the chance to access wrong address, and crash may happen. |
| |
| This patch checks the value of smcd_v2_ext_offset before using it. |
| |
| The Linux kernel CVE team has assigned CVE-2024-47408 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit 5c21c4ccafe85906db809de3af391fd434df8a27 and fixed in 5.15.176 with commit a36364d8d4fabb105001f992fb8ff2d3546203d6 |
| Issue introduced in 5.10 with commit 5c21c4ccafe85906db809de3af391fd434df8a27 and fixed in 6.1.122 with commit e1cc8be2a785a8f1ce1f597f3e608602c5fccd46 |
| Issue introduced in 5.10 with commit 5c21c4ccafe85906db809de3af391fd434df8a27 and fixed in 6.6.68 with commit 935caf324b445fe73d7708fae6f7176fb243f357 |
| Issue introduced in 5.10 with commit 5c21c4ccafe85906db809de3af391fd434df8a27 and fixed in 6.12.7 with commit 48d5a8a304a643613dab376a278f29d3e22f7c34 |
| Issue introduced in 5.10 with commit 5c21c4ccafe85906db809de3af391fd434df8a27 and fixed in 6.13 with commit 9ab332deb671d8f7e66d82a2ff2b3f715bc3a4ad |
| |
| 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-2024-47408 |
| 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.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/a36364d8d4fabb105001f992fb8ff2d3546203d6 |
| https://git.kernel.org/stable/c/e1cc8be2a785a8f1ce1f597f3e608602c5fccd46 |
| https://git.kernel.org/stable/c/935caf324b445fe73d7708fae6f7176fb243f357 |
| https://git.kernel.org/stable/c/48d5a8a304a643613dab376a278f29d3e22f7c34 |
| https://git.kernel.org/stable/c/9ab332deb671d8f7e66d82a2ff2b3f715bc3a4ad |
