| 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-2024-38556: net/mlx5: Add a timeout to acquire the command queue semaphore |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5: Add a timeout to acquire the command queue semaphore |
| |
| Prevent forced completion handling on an entry that has not yet been |
| assigned an index, causing an out of bounds access on idx = -22. |
| Instead of waiting indefinitely for the sem, blocking flow now waits for |
| index to be allocated or a sem acquisition timeout before beginning the |
| timer for FW completion. |
| |
| Kernel log example: |
| mlx5_core 0000:06:00.0: wait_func_handle_exec_timeout:1128:(pid 185911): cmd[-22]: CREATE_UCTX(0xa04) No done completion |
| |
| The Linux kernel CVE team has assigned CVE-2024-38556 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.17 with commit 8e715cd613a1e872b9d918e912d90b399785761a and fixed in 6.1.93 with commit 4baae687a20ef2b82fde12de3c04461e6f2521d6 |
| Issue introduced in 5.17 with commit 8e715cd613a1e872b9d918e912d90b399785761a and fixed in 6.6.33 with commit f9caccdd42e999b74303c9b0643300073ed5d319 |
| Issue introduced in 5.17 with commit 8e715cd613a1e872b9d918e912d90b399785761a and fixed in 6.8.12 with commit 2d0962d05c93de391ce85f6e764df895f47c8918 |
| Issue introduced in 5.17 with commit 8e715cd613a1e872b9d918e912d90b399785761a and fixed in 6.9.3 with commit 94024332a129c6e4275569d85c0c1bfb2ae2d71b |
| Issue introduced in 5.17 with commit 8e715cd613a1e872b9d918e912d90b399785761a and fixed in 6.10 with commit 485d65e1357123a697c591a5aeb773994b247ad7 |
| Issue introduced in 5.4.174 with commit 74dd45122b84479eee50bd0956ae8bc5799c9f8a |
| Issue introduced in 5.10.94 with commit e801f81cee3c8901f52ee48c6329802b28fbb49c |
| Issue introduced in 5.15.17 with commit d73d81447c6651904dd4a9e3fd88651ff174c1b7 |
| Issue introduced in 5.16.3 with commit 4646175c19fd019b773444a11ff62748eb83745b |
| |
| 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-2024-38556 |
| 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/cmd.c |
| include/linux/mlx5/driver.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/4baae687a20ef2b82fde12de3c04461e6f2521d6 |
| https://git.kernel.org/stable/c/f9caccdd42e999b74303c9b0643300073ed5d319 |
| https://git.kernel.org/stable/c/2d0962d05c93de391ce85f6e764df895f47c8918 |
| https://git.kernel.org/stable/c/94024332a129c6e4275569d85c0c1bfb2ae2d71b |
| https://git.kernel.org/stable/c/485d65e1357123a697c591a5aeb773994b247ad7 |
