| 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-2024-40940: net/mlx5: Fix tainted pointer delete is case of flow rules creation fail |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5: Fix tainted pointer delete is case of flow rules creation fail |
| |
| In case of flow rule creation fail in mlx5_lag_create_port_sel_table(), |
| instead of previously created rules, the tainted pointer is deleted |
| deveral times. |
| Fix this bug by using correct flow rules pointers. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-40940 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit 352899f384d4aefa77ede6310d08c1b515612a8f and fixed in 6.1.95 with commit 531eab2da27dd42d68dfb841d82e987f4a6738b8 |
| Issue introduced in 5.19 with commit 352899f384d4aefa77ede6310d08c1b515612a8f and fixed in 6.6.35 with commit d857df86837ac1c30592e8a068204d16feac9930 |
| Issue introduced in 5.19 with commit 352899f384d4aefa77ede6310d08c1b515612a8f and fixed in 6.9.6 with commit a03a3fa12769e25f4385bee587afe1445aee7f7a |
| Issue introduced in 5.19 with commit 352899f384d4aefa77ede6310d08c1b515612a8f and fixed in 6.10 with commit 229bedbf62b13af5aba6525ad10b62ad38d9ccb5 |
| |
| 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-2024-40940 |
| 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/mlx5/core/lag/port_sel.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/531eab2da27dd42d68dfb841d82e987f4a6738b8 |
| https://git.kernel.org/stable/c/d857df86837ac1c30592e8a068204d16feac9930 |
| https://git.kernel.org/stable/c/a03a3fa12769e25f4385bee587afe1445aee7f7a |
| https://git.kernel.org/stable/c/229bedbf62b13af5aba6525ad10b62ad38d9ccb5 |
