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GHSA-2W74-HFC7-29W5

Vulnerability from github – Published: 2024-11-08 06:30 – Updated: 2024-11-27 21:32

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup()

The group variable can't be used to retrieve ptdev in our second loop, because it points to the previously iterated list_head, not a valid group. Get the ptdev object from the scheduler instead.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-50173"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-08T06:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup()\n\nThe group variable can\u0027t be used to retrieve ptdev in our second loop,\nbecause it points to the previously iterated list_head, not a valid\ngroup. Get the ptdev object from the scheduler instead.",
  "id": "GHSA-2w74-hfc7-29w5",
  "modified": "2024-11-27T21:32:43Z",
  "published": "2024-11-08T06:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50173"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/282864cc5d3f144af0cdea1868ee2dc2c5110f0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bde05794497d5f426d4ea2ecb9868bf7721fb24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac2ca5e5148a0d4d78ac01c2d8348d0757c7367f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-50173 (GCVE-0-2024-50173)

Vulnerability from cvelistv5 – Published: 2024-11-08 05:23 – Updated: 2026-08-05 11:42

Title

drm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup() The group variable can't be used to retrieve ptdev in our second loop, because it points to the previously iterated list_head, not a valid group. Get the ptdev object from the scheduler instead.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 20:19 UTC

CWE

CWE-908 - Use of Uninitialized Resource

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/ac2ca5e5148a0d4d7…
https://git.kernel.org/stable/c/3bde05794497d5f42…
https://git.kernel.org/stable/c/282864cc5d3f144af…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d72f049087d4f973f6332b599c92177e718107de , < ac2ca5e5148a0d4d78ac01c2d8348d0757c7367f (git) Affected: d72f049087d4f973f6332b599c92177e718107de , < 3bde05794497d5f426d4ea2ecb9868bf7721fb24 (git) Affected: d72f049087d4f973f6332b599c92177e718107de , < 282864cc5d3f144af0cdea1868ee2dc2c5110f0d (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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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            "other": {
              "content": {
                "id": "CVE-2024-50173",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:19:28.113788Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
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                "cweId": "CWE-908",
                "description": "CWE-908 Use of Uninitialized Resource",
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        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:27:10.747Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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    "cna": {
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              "status": "affected",
              "version": "d72f049087d4f973f6332b599c92177e718107de",
              "versionType": "git"
            },
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              "lessThan": "3bde05794497d5f426d4ea2ecb9868bf7721fb24",
              "status": "affected",
              "version": "d72f049087d4f973f6332b599c92177e718107de",
              "versionType": "git"
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            {
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              "status": "affected",
              "version": "d72f049087d4f973f6332b599c92177e718107de",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_sched.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "versionStartIncluding": "6.10",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.3",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.10",
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              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup()\n\nThe group variable can\u0027t be used to retrieve ptdev in our second loop,\nbecause it points to the previously iterated list_head, not a valid\ngroup. Get the ptdev object from the scheduler instead."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is the panthor GPU scheduler tick worker, reached only through DRM ioctls on `/dev/dri/renderD*` (GROUP_CREATE/GROUP_SUBMIT). There is no network or remote path to the panthor scheduler.\nAC:L - There is no race to win and no memory-layout condition outside the attacker\u0027s influence; the bogus `group` pointer is deterministic (a fixed negative offset from the on-stack tick context) and the attacker fully controls invocation of the scheduler tick by submitting GPU work and provoking queue faults, CSG timeouts and reset handling.\nPR:L - All panthor ioctls are marked `DRM_RENDER_ALLOW`, requiring neither DRM master nor any capability, so any local unprivileged process with render-node access (the default for desktop/Chromebook/Android GPU clients and sandboxed renderers) can reach the path.\nUI:N - The attacker\u0027s own process drives group creation and job submission; the scheduler tick work runs asynchronously with no action required from any other user.\nS:U - The stale pointer read and resulting fault occur in kernel context within the same security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - The garbage value loaded from stale kernel stack is dereferenced as a `struct panthor_device *` and a string is read through `-\u003ebase.dev` and printed via printk, disclosing kernel memory contents into the kernel log; the attacker can influence stack residue to steer that read.\nI:H - Consuming an uninitialized pointer as a live device object corrupts kernel control flow into `dev_driver_string()`/`dev_name()` on attacker-influenceable stack residue, which is not a bounded read and is treated as exploitable memory corruption rather than a contained fault.\nA:H - Dereferencing the bogus `group-\u003eptdev` value reliably produces an oops/panic in the GPU scheduler worker while holding `sched-\u003elock`, wedging the GPU scheduler and crashing the kernel."
            }
          ]
        }
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      "providerMetadata": {
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          "url": "https://git.kernel.org/stable/c/3bde05794497d5f426d4ea2ecb9868bf7721fb24"
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        {
          "url": "https://git.kernel.org/stable/c/282864cc5d3f144af0cdea1868ee2dc2c5110f0d"
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      ],
      "title": "drm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup()",
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    "datePublished": "2024-11-08T05:23:55.847Z",
    "dateReserved": "2024-10-21T19:36:19.963Z",
    "dateUpdated": "2026-08-05T11:42:15.864Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-2W74-HFC7-29W5

CVE-2024-50173 (GCVE-0-2024-50173)

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