| 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-2022-48932: net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte |
| |
| When adding a rule with 32 destinations, we hit the following out-of-band |
| access issue: |
| |
| BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70 |
| |
| This patch fixes the issue by both increasing the allocated buffers to |
| accommodate for the needed actions and by checking the number of actions |
| to prevent this issue when a rule with too many actions is provided. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48932 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit 1ffd498901c1134a7cbecf5409e12c064c39cef9 and fixed in 5.16.12 with commit 4ad319cdfbe555b4ff67bc608736c46a6930c848 |
| Issue introduced in 5.16 with commit 1ffd498901c1134a7cbecf5409e12c064c39cef9 and fixed in 5.17 with commit 0aec12d97b2036af0946e3d582144739860ac07b |
| |
| 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-2022-48932 |
| 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/steering/fs_dr.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/4ad319cdfbe555b4ff67bc608736c46a6930c848 |
| https://git.kernel.org/stable/c/0aec12d97b2036af0946e3d582144739860ac07b |
