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CVE-2024-50156 (GCVE-0-2024-50156)

Vulnerability from cvelistv5 – Published: 2024-11-07 09:31 – Updated: 2026-05-11 20:46
VLAI
Title
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function _does_ have code to try to handle it with: if (*reg) dump_addr = *reg; ...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goes on to dereference `dump_addr`. Make the function print "Registers not stored" when it sees a NULL to solve this. Since we're touching the code, fix msm_disp_state_print_regs() not to pointlessly take a double-pointer and properly mark the pointer as `const`. Patchwork: https://patchwork.freedesktop.org/patch/619657/
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:20 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 98659487b845c05b6bed85d881713545db674c7c , < 42cf045086feae77b212f0f66e742b91a5b566b7 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < e8e9f2a12a6214080c8ea83220a596f6e1dedc6c (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < f7ad916273483748582d97cfa31054ccb19224f3 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 563aa81fd66a4e7e6e551a0e02bcc23957cafe2f (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 293f53263266bc4340d777268ab4328a97f041fa (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.170 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Avoid NULL dereference in msm_disp_state_print_regs()\n\nIf the allocation in msm_disp_state_dump_regs() failed then\n`block-\u003estate` can be NULL. The msm_disp_state_print_regs() function\n_does_ have code to try to handle it with:\n\n  if (*reg)\n    dump_addr = *reg;\n\n...but since \"dump_addr\" is initialized to NULL the above is actually\na noop. The code then goes on to dereference `dump_addr`.\n\nMake the function print \"Registers not stored\" when it sees a NULL to\nsolve this. Since we\u0027re touching the code, fix\nmsm_disp_state_print_regs() not to pointlessly take a double-pointer\nand properly mark the pointer as `const`.\n\nPatchwork: https://patchwork.freedesktop.org/patch/619657/"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/msm: Evitar la desreferenciaci\u00f3n NULL en msm_disp_state_print_regs() Si la asignaci\u00f3n en msm_disp_state_dump_regs() falla, entonces `block-\u0026gt;state` puede ser NULL. La funci\u00f3n msm_disp_state_print_regs() _s\u00ed_ tiene c\u00f3digo para intentar manejarlo con: if (*reg) dump_addr = *reg; ...pero como \"dump_addr\" se inicializa a NULL, lo anterior es en realidad un noop. Luego, el c\u00f3digo contin\u00faa para desreferenciar `dump_addr`. Haga que la funci\u00f3n imprima \"Registros no almacenados\" cuando vea un NULL para resolver esto. Ya que estamos tocando el c\u00f3digo, arregle msm_disp_state_print_regs() para que no tome un puntero doble sin sentido y marque correctamente el puntero como `const`. Parche: https://patchwork.freedesktop.org/patch/619657/"
          }
        ],
        "id": "CVE-2024-50156",
        "lastModified": "2026-06-17T08:03:44.300",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
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              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
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                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
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              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
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                "options": [
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                  },
                  {
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                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:20:34.229291Z",
                "version": "2.0.3"
              }
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        "published": "2024-11-07T10:15:07.127",
        "references": [
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            "tags": [
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            "tags": [
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
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              {
                "lang": "en",
                "value": "CWE-476"
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            "type": "Primary"
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            "type": "Secondary"
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      "current_release_date": "2025-11-21T14:22:40+00:00",
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      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50156",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50156.json",
      "version": "54"
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        "state": "PUBLISHED"
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}



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Taxonomy of the tags.





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

Author Source Type Date Other

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.