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Message-ID: <2025011152-CVE-2024-57800-699a@gregkh> Date: Sat, 11 Jan 2025 13:39:55 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.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-rc5 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
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