drm/fbdev-dma: Only set smem_start is enable per module option

{
  "id": "1889937e9566a368d27fab9548bba8f52dba371aa80c867434db453e128929d4",
  "url": "https://osv.dev/vulnerability/CVE-2024-41094",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/fbdev-dma: Only set smem_start is enable per module option",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/fbdev-dma: Only set smem_start is enable per module option Only export struct fb_info.fix.smem_start if that is required by the user and the memory does not come from vmalloc(). Setting struct fb_info.fix.smem_start breaks systems where DMA memory is backed by vmalloc address space. An example error is shown below. [ 3.536043] ------------[ cut here ]------------ [ 3.540716] virt_to_phys used for non-linear address: 000000007fc4f540 (0xffff800086001000) [ 3.552628] WARNING: CPU: 4 PID: 61 at arch/arm64/mm/physaddr.c:12 __virt_to_phys+0x68/0x98 [ 3.565455] Modules linked in: [ 3.568525] CPU: 4 PID: 61 Comm: kworker/u12:5 Not tainted 6.6.23-06226-g4986cc3e1b75-dirty #250 [ 3.577310] Hardware name: NXP i.MX95 19X19 board (DT) [ 3.582452] Workqueue: events_unbound deferred_probe_work_func [ 3.588291] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 3.595233] pc : __virt_to_phys+0x68/0x98 [ 3.599246] lr : __virt_to_phys+0x68/0x98 [ 3.603276] sp : ffff800083603990 [ 3.677939] Call trace: [ 3.680393] __virt_to_phys+0x68/0x98 [ 3.684067] drm_fbdev_dma_helper_fb_probe+0x138/0x238 [ 3.689214] __drm_fb_helper_initial_config_and_unlock+0x2b0/0x4c0 [ 3.695385] drm_fb_helper_initial_config+0x4c/0x68 [ 3.700264] drm_fbdev_dma_client_hotplug+0x8c/0xe0 [ 3.705161] drm_client_register+0x60/0xb0 [ 3.709269] drm_fbdev_dma_setup+0x94/0x148 Additionally, DMA memory is assumed to by contiguous in physical addre",
    "evidence": "osv:CVE-2024-41094",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.37",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-41094",
      "aliases": [
        "CVE-2024-41094"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a51c7663f144606a5f08e772fa3e1e4f2277a614"
                },
                {
                  "fixed": "f29fcfbf6067c0d8c83f84a045da9276c08deac5"
                },
                {
                  "fixed": "00702cfa8432ac67a72f56de5e1d278ddea2ebde"
                },
                {
                  "fixed": "d92a7580392ad4681b1d4f9275d00b95375ebe01"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-41094.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.6.37"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.9.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-41094.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.761592395Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/00702cfa8432ac67a72f56de5e1d278ddea2ebde",
        "https://git.kernel.org/stable/c/d92a7580392ad4681b1d4f9275d00b95375ebe01",
        "https://git.kernel.org/stable/c/f29fcfbf6067c0d8c83f84a045da9276c08deac5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41094.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-41094",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41094.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-41094",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 489856,
  "published_at": "2024-07-29T15:48:07.508+00:00"
}