| 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-2024-42138: mlxsw: core_linecards: Fix double memory deallocation in case of invalid INI file |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mlxsw: core_linecards: Fix double memory deallocation in case of invalid INI file |
| |
| In case of invalid INI file mlxsw_linecard_types_init() deallocates memory |
| but doesn't reset pointer to NULL and returns 0. In case of any error |
| occurred after mlxsw_linecard_types_init() call, mlxsw_linecards_init() |
| calls mlxsw_linecard_types_fini() which performs memory deallocation again. |
| |
| Add pointer reset to NULL. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-42138 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit b217127e5e4ee0ecfce7c5f84cfe082238123bda and fixed in 6.1.98 with commit ab557f5cd993a3201b09593633d04b891263d5c0 |
| Issue introduced in 5.19 with commit b217127e5e4ee0ecfce7c5f84cfe082238123bda and fixed in 6.6.39 with commit f8b55a465b0e8a500179808166fe9420f5c091a1 |
| Issue introduced in 5.19 with commit b217127e5e4ee0ecfce7c5f84cfe082238123bda and fixed in 6.9.9 with commit 9af7437669b72f804fc4269f487528dbbed142a2 |
| Issue introduced in 5.19 with commit b217127e5e4ee0ecfce7c5f84cfe082238123bda and fixed in 6.10 with commit 8ce34dccbe8fa7d2ef86f2d8e7db2a9b67cabfc3 |
| |
| 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-2024-42138 |
| 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: |
| drivers/net/ethernet/mellanox/mlxsw/core_linecards.c |
| |
| |
| 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/ab557f5cd993a3201b09593633d04b891263d5c0 |
| https://git.kernel.org/stable/c/f8b55a465b0e8a500179808166fe9420f5c091a1 |
| https://git.kernel.org/stable/c/9af7437669b72f804fc4269f487528dbbed142a2 |
| https://git.kernel.org/stable/c/8ce34dccbe8fa7d2ef86f2d8e7db2a9b67cabfc3 |
