| 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-2024-57800: ALSA: memalloc: prefer dma_mapping_error() over explicit address checking |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ALSA: memalloc: prefer dma_mapping_error() over explicit address checking |
| |
| With CONFIG_DMA_API_DEBUG enabled, the following warning is observed: |
| |
| DMA-API: snd_hda_intel 0000:03:00.1: device driver failed to check map error[device address=0x00000000ffff0000] [size=20480 bytes] [mapped as single] |
| WARNING: CPU: 28 PID: 2255 at kernel/dma/debug.c:1036 check_unmap+0x1408/0x2430 |
| CPU: 28 UID: 42 PID: 2255 Comm: wireplumber Tainted: G W L 6.12.0-10-133577cad6bf48e5a7848c4338124081393bfe8a+ #759 |
| debug_dma_unmap_page+0xe9/0xf0 |
| snd_dma_wc_free+0x85/0x130 [snd_pcm] |
| snd_pcm_lib_free_pages+0x1e3/0x440 [snd_pcm] |
| snd_pcm_common_ioctl+0x1c9a/0x2960 [snd_pcm] |
| snd_pcm_ioctl+0x6a/0xc0 [snd_pcm] |
| ... |
| |
| Check for returned DMA addresses using specialized dma_mapping_error() |
| helper which is generally recommended for this purpose by |
| Documentation/core-api/dma-api.rst. |
| |
| The Linux kernel CVE team has assigned CVE-2024-57800 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.12 with commit c880a5146642e9d35f88aaa353ae98ffd4fc3f99 and fixed in 6.12.8 with commit c180c3f42d340e8dcb9094bb8ea7d477d37081a8 |
| Issue introduced in 6.12 with commit c880a5146642e9d35f88aaa353ae98ffd4fc3f99 and fixed in 6.13 with commit fa0308134d26dbbeb209a1581eea46df663866b6 |
| |
| 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-2024-57800 |
| 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: |
| sound/core/memalloc.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/c180c3f42d340e8dcb9094bb8ea7d477d37081a8 |
| https://git.kernel.org/stable/c/fa0308134d26dbbeb209a1581eea46df663866b6 |
