| 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-2024-46717: net/mlx5e: SHAMPO, Fix incorrect page release |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5e: SHAMPO, Fix incorrect page release |
| |
| Under the following conditions: |
| 1) No skb created yet |
| 2) header_size == 0 (no SHAMPO header) |
| 3) header_index + 1 % MLX5E_SHAMPO_WQ_HEADER_PER_PAGE == 0 (this is the |
| last page fragment of a SHAMPO header page) |
| |
| a new skb is formed with a page that is NOT a SHAMPO header page (it |
| is a regular data page). Further down in the same function |
| (mlx5e_handle_rx_cqe_mpwrq_shampo()), a SHAMPO header page from |
| header_index is released. This is wrong and it leads to SHAMPO header |
| pages being released more than once. |
| |
| The Linux kernel CVE team has assigned CVE-2024-46717 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.1.109 with commit 03924d117625ecb10ee3c9b65930bcb2c37ae629 |
| Fixed in 6.6.50 with commit ae9018e3f61ba5cc1f08a6e51d3c0bef0a79f3ab |
| Fixed in 6.10.9 with commit c909ab41df2b09cde919801c7a7b6bb2cc37ea22 |
| Fixed in 6.11 with commit 70bd03b89f20b9bbe51a7f73c4950565a17a45f7 |
| |
| 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-2024-46717 |
| 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/en_rx.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/03924d117625ecb10ee3c9b65930bcb2c37ae629 |
| https://git.kernel.org/stable/c/ae9018e3f61ba5cc1f08a6e51d3c0bef0a79f3ab |
| https://git.kernel.org/stable/c/c909ab41df2b09cde919801c7a7b6bb2cc37ea22 |
| https://git.kernel.org/stable/c/70bd03b89f20b9bbe51a7f73c4950565a17a45f7 |
