Vulnerability-Lookup

GHSA-XC3W-PCVF-RM7M

Vulnerability from github – Published: 2024-02-28 09:30 – Updated: 2024-12-09 18:31

Details

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

dmaengine: idxd: Fix potential null dereference on pointer status

There are calls to idxd_cmd_exec that pass a null status pointer however a recent commit has added an assignment to status that can end up with a null pointer dereference. The function expects a null status pointer sometimes as there is a later assignment to status where status is first null checked. Fix the issue by null checking status before making the assignment.

Addresses-Coverity: ("Explicit null dereferenced")

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-2021-47003"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-28T09:15:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix potential null dereference on pointer status\n\nThere are calls to idxd_cmd_exec that pass a null status pointer however\na recent commit has added an assignment to *status that can end up\nwith a null pointer dereference.  The function expects a null status\npointer sometimes as there is a later assignment to *status where\nstatus is first null checked.  Fix the issue by null checking status\nbefore making the assignment.\n\nAddresses-Coverity: (\"Explicit null dereferenced\")",
  "id": "GHSA-xc3w-pcvf-rm7m",
  "modified": "2024-12-09T18:31:18Z",
  "published": "2024-02-28T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47003"
    },
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    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28ac8e03c43dfc6a703aa420d18222540b801120"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5756f757c72501ef1a16f5f63f940623044180e9"
    },
    {
      "type": "WEB",
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    }
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  "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"
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}

CVE-2021-47003 (GCVE-0-2021-47003)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-23 15:19

Title

dmaengine: idxd: Fix potential null dereference on pointer status

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix potential null dereference on pointer status There are calls to idxd_cmd_exec that pass a null status pointer however a recent commit has added an assignment to *status that can end up with a null pointer dereference. The function expects a null status pointer sometimes as there is a later assignment to *status where status is first null checked. Fix the issue by null checking status before making the assignment. Addresses-Coverity: ("Explicit null dereferenced")

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-28 19:56 UTC

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/5756f757c72501ef1…
https://git.kernel.org/stable/c/2280b4cc29d8cdd2b…
https://git.kernel.org/stable/c/7bc402f843e7817a4…
https://git.kernel.org/stable/c/28ac8e03c43dfc6a7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 40e3b5c128645d2ddad12310c7be98758cafb2b0 , < 5756f757c72501ef1a16f5f63f940623044180e9 (git) Affected: 89e3becd8f821e507052e012d2559dcda59f538e , < 2280b4cc29d8cdd2be3d1b2d1ea4f958e2131c97 (git) Affected: 89e3becd8f821e507052e012d2559dcda59f538e , < 7bc402f843e7817a4a808e7b9ab0bcd7ffd55bfa (git) Affected: 89e3becd8f821e507052e012d2559dcda59f538e , < 28ac8e03c43dfc6a703aa420d18222540b801120 (git) Affected: 5.10.17 , < 5.10.38 (semver)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.10.38 , ≤ 5.10.* (semver) Unaffected: 5.11.22 , ≤ 5.11.* (semver) Unaffected: 5.12.5 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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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.

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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-XC3W-PCVF-RM7M

CVE-2021-47003 (GCVE-0-2021-47003)

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