CVE-2024-41094 (GCVE-0-2024-41094)

Vulnerability from cvelistv5 – Published: 2024-07-29 15:48 – Updated: 2026-05-11 20:26
VLAI
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 address space, which is not guaranteed by vmalloc(). Resolve this by checking the module flag drm_leak_fbdev_smem when DRM allocated the instance of struct fb_info. Fbdev-dma then only sets smem_start only if required (via FBINFO_HIDE_SMEM_START). Also guarantee that the framebuffer is not located in vmalloc address space.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:20 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a51c7663f144606a5f08e772fa3e1e4f2277a614 , < f29fcfbf6067c0d8c83f84a045da9276c08deac5 (git)
Affected: a51c7663f144606a5f08e772fa3e1e4f2277a614 , < 00702cfa8432ac67a72f56de5e1d278ddea2ebde (git)
Affected: a51c7663f144606a5f08e772fa3e1e4f2277a614 , < d92a7580392ad4681b1d4f9275d00b95375ebe01 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.37 , ≤ 6.6.* (semver)
Unaffected: 6.9.8 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/fbdev-dma: solo configurar smem_start est\u00e1 habilitado por opci\u00f3n de m\u00f3dulo. Solo exporte la estructura fb_info.fix.smem_start si as\u00ed lo requiere el usuario y la memoria no proviene de vmalloc( ). La configuraci\u00f3n de struct fb_info.fix.smem_start interrumpe los sistemas donde la memoria DMA est\u00e1 respaldada por el espacio de direcciones vmalloc. A continuaci\u00f3n se muestra un error de ejemplo. [3.536043] ------------[ cortar aqu\u00ed ]------------ [ 3.540716] virt_to_phys usado para direcciones no lineales: 000000007fc4f540 (0xffff800086001000) [ 3.552628] ADVERTENCIA : CPU: 4 PID: 61 en arch/arm64/mm/physaddr.c:12 __virt_to_phys+0x68/0x98 [ 3.565455] M\u00f3dulos vinculados en: [ 3.568525] CPU: 4 PID: 61 Comm: kworker/u12:5 No contaminado 6.6 .23-06226-g4986cc3e1b75-dirty #250 [ 3.577310] Nombre de hardware: placa NXP i.MX95 19X19 (DT) [ 3.582452] Cola de trabajo: 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] Rastreo de llamadas: [ 3.68039 3] __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] xe0 [ 3.705161] drm_client_register+0x60/0xb0 [ 3.709269] drm_fbdev_dma_setup+0x94/0x148 Adem\u00e1s, se supone memoria DMA a por contiguo en el espacio de direcciones f\u00edsicas, lo cual no est\u00e1 garantizado por vmalloc(). Resuelva esto verificando el indicador del m\u00f3dulo drm_leak_fbdev_smem cuando DRM asign\u00f3 la instancia de la estructura fb_info. Luego, Fbdev-dma solo configura smem_start solo si es necesario (a trav\u00e9s de FBINFO_HIDE_SMEM_START). Tambi\u00e9n garantice que el framebuffer no est\u00e9 ubicado en el espacio de direcciones vmalloc."
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                "integrityImpact": "NONE",
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://git.kernel.org/stable/c/f29fcfbf6067c0d8c83f84a045da9276c08deac5"
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:54:30+00:00",
      "cve": "CVE-2024-41094",
      "id": "CVE-2024-41094",
      "initial_release_date": "2024-07-29T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "70",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/fbdev-dma: Only set smem_start is enable per module option",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-41094.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T04:46:52.465Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
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                "url": "https://git.kernel.org/stable/c/f29fcfbf6067c0d8c83f84a045da9276c08deac5"
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                "url": "https://git.kernel.org/stable/c/d92a7580392ad4681b1d4f9275d00b95375ebe01"
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            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-41094",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-10T16:20:29.018042Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-11T12:42:14.814Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/gpu/drm/drm_fb_helper.c",
                "drivers/gpu/drm/drm_fbdev_dma.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "f29fcfbf6067",
                  "status": "affected",
                  "version": "a51c7663f144",
                  "versionType": "git"
                },
                {
                  "lessThan": "00702cfa8432",
                  "status": "affected",
                  "version": "a51c7663f144",
                  "versionType": "git"
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                  "lessThan": "d92a7580392a",
                  "status": "affected",
                  "version": "a51c7663f144",
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              "product": "Linux",
              "programFiles": [
                "drivers/gpu/drm/drm_fb_helper.c",
                "drivers/gpu/drm/drm_fbdev_dma.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.4"
                },
                {
                  "lessThan": "6.4",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.37",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.9.*",
                  "status": "unaffected",
                  "version": "6.9.8",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.10",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/fbdev-dma: Only set smem_start is enable per module option\n\nOnly export struct fb_info.fix.smem_start if that is required by the\nuser and the memory does not come from vmalloc().\n\nSetting struct fb_info.fix.smem_start breaks systems where DMA\nmemory is backed by vmalloc address space. An example error is\nshown below.\n\n[    3.536043] ------------[ cut here ]------------\n[    3.540716] virt_to_phys used for non-linear address: 000000007fc4f540 (0xffff800086001000)\n[    3.552628] WARNING: CPU: 4 PID: 61 at arch/arm64/mm/physaddr.c:12 __virt_to_phys+0x68/0x98\n[    3.565455] Modules linked in:\n[    3.568525] CPU: 4 PID: 61 Comm: kworker/u12:5 Not tainted 6.6.23-06226-g4986cc3e1b75-dirty #250\n[    3.577310] Hardware name: NXP i.MX95 19X19 board (DT)\n[    3.582452] Workqueue: events_unbound deferred_probe_work_func\n[    3.588291] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[    3.595233] pc : __virt_to_phys+0x68/0x98\n[    3.599246] lr : __virt_to_phys+0x68/0x98\n[    3.603276] sp : ffff800083603990\n[    3.677939] Call trace:\n[    3.680393]  __virt_to_phys+0x68/0x98\n[    3.684067]  drm_fbdev_dma_helper_fb_probe+0x138/0x238\n[    3.689214]  __drm_fb_helper_initial_config_and_unlock+0x2b0/0x4c0\n[    3.695385]  drm_fb_helper_initial_config+0x4c/0x68\n[    3.700264]  drm_fbdev_dma_client_hotplug+0x8c/0xe0\n[    3.705161]  drm_client_register+0x60/0xb0\n[    3.709269]  drm_fbdev_dma_setup+0x94/0x148\n\nAdditionally, DMA memory is assumed to by contiguous in physical\naddress space, which is not guaranteed by vmalloc().\n\nResolve this by checking the module flag drm_leak_fbdev_smem when\nDRM allocated the instance of struct fb_info. Fbdev-dma then only\nsets smem_start only if required (via FBINFO_HIDE_SMEM_START). Also\nguarantee that the framebuffer is not located in vmalloc address\nspace."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-11-05T09:36:35.306Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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            },
            {
              "url": "https://git.kernel.org/stable/c/d92a7580392ad4681b1d4f9275d00b95375ebe01"
            }
          ],
          "title": "drm/fbdev-dma: Only set smem_start is enable per module option",
          "x_generator": {
            "engine": "bippy-9e1c9544281a"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-41094",
        "datePublished": "2024-07-29T15:48:07.508Z",
        "dateReserved": "2024-07-12T12:17:45.637Z",
        "dateUpdated": "2024-11-05T09:36:35.306Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.