{"id":"CVE-2026-43302","summary":"drm/v3d: Set DMA segment size to avoid debug warnings","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/v3d: Set DMA segment size to avoid debug warnings\n\nWhen using V3D rendering with CONFIG_DMA_API_DEBUG enabled, the\nkernel occasionally reports a segment size mismatch. This is because\n'max_seg_size' is not set. The kernel defaults to 64K. setting\n'max_seg_size' to the maximum will prevent 'debug_dma_map_sg()'\nfrom complaining about the over-mapping of the V3D segment length.\n\nDMA-API: v3d 1002000000.v3d: mapping sg segment longer than device\n claims to support [len=8290304] [max=65536]\nWARNING: CPU: 0 PID: 493 at kernel/dma/debug.c:1179 debug_dma_map_sg+0x330/0x388\nCPU: 0 UID: 0 PID: 493 Comm: Xorg Not tainted 6.12.53-yocto-standard #1\nHardware name: Raspberry Pi 5 Model B Rev 1.0 (DT)\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : debug_dma_map_sg+0x330/0x388\nlr : debug_dma_map_sg+0x330/0x388\nsp : ffff8000829a3ac0\nx29: ffff8000829a3ac0 x28: 0000000000000001 x27: ffff8000813fe000\nx26: ffffc1ffc0000000 x25: ffff00010fdeb760 x24: 0000000000000000\nx23: ffff8000816a9bf0 x22: 0000000000000001 x21: 0000000000000002\nx20: 0000000000000002 x19: ffff00010185e810 x18: ffffffffffffffff\nx17: 69766564206e6168 x16: 74207265676e6f6c x15: 20746e656d676573\nx14: 20677320676e6970 x13: 5d34303334393134 x12: 0000000000000000\nx11: 00000000000000c0 x10: 00000000000009c0 x9 : ffff8000800e0b7c\nx8 : ffff00010a315ca0 x7 : ffff8000816a5110 x6 : 0000000000000001\nx5 : 000000000000002b x4 : 0000000000000002 x3 : 0000000000000008\nx2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00010a315280\nCall trace:\n debug_dma_map_sg+0x330/0x388\n __dma_map_sg_attrs+0xc0/0x278\n dma_map_sgtable+0x30/0x58\n drm_gem_shmem_get_pages_sgt+0xb4/0x140\n v3d_bo_create_finish+0x28/0x130 [v3d]\n v3d_create_bo_ioctl+0x54/0x180 [v3d]\n drm_ioctl_kernel+0xc8/0x140\n drm_ioctl+0x2d4/0x4d8","modified":"2026-06-18T03:55:04.917261533Z","published":"2026-05-08T13:11:22.886Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43302.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0290934d30abe7c88e18140fd5184c3f386b1e44"},{"type":"WEB","url":"https://git.kernel.org/stable/c/14d0d6c8b4504a60cfeea74775ab2e0164019e65"},{"type":"WEB","url":"https://git.kernel.org/stable/c/225023e3619b81af6d8d0e680503fc2d68633023"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2663ef70c6123b2232190f917275e5c3175f97d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9eb018828b1b30dfba689c060735c50fc5b9f704"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf510785f74e74c54de40a43a955b7f844857487"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db15f469a88d3bbeeaa9f8c9f5e74d856ba5d7d2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43302.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43302"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"57692c94dcbe99a1e0444409a3da13fb3443562c"},{"fixed":"14d0d6c8b4504a60cfeea74775ab2e0164019e65"},{"fixed":"225023e3619b81af6d8d0e680503fc2d68633023"},{"fixed":"2663ef70c6123b2232190f917275e5c3175f97d0"},{"fixed":"cf510785f74e74c54de40a43a955b7f844857487"},{"fixed":"0290934d30abe7c88e18140fd5184c3f386b1e44"},{"fixed":"db15f469a88d3bbeeaa9f8c9f5e74d856ba5d7d2"},{"fixed":"9eb018828b1b30dfba689c060735c50fc5b9f704"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43302.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.18.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43302.json"}}],"schema_version":"1.7.5"}