Vulnerability-Lookup

GHSA-6H98-V544-XJ7Q

Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2024-12-30 21:30

Details

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

net: qrtr: fix OOB Read in qrtr_endpoint_post

Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong size type:

if (len != ALIGN(size, 4) + hdrlen)
    goto err;

If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and

skb_put_data(skb, data + hdrlen, size);

will read out of bound from data, which is hdrlen allocated block.

Severity

7.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47240"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: fix OOB Read in qrtr_endpoint_post\n\nSyzbot reported slab-out-of-bounds Read in\nqrtr_endpoint_post. The problem was in wrong\n_size_ type:\n\n\tif (len != ALIGN(size, 4) + hdrlen)\n\t\tgoto err;\n\nIf size from qrtr_hdr is 4294967293 (0xfffffffd), the result of\nALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293\nin header this check won\u0027t fail and\n\n\tskb_put_data(skb, data + hdrlen, size);\n\nwill read out of bound from data, which is hdrlen allocated block.",
  "id": "GHSA-6h98-v544-xj7q",
  "modified": "2024-12-30T21:30:46Z",
  "published": "2024-05-21T15:31:40Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47240"
    },
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      "url": "https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe"
    },
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      "url": "https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d"
    },
    {
      "type": "WEB",
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  "schema_version": "1.4.0",
  "severity": [
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      "type": "CVSS_V3"
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}

CVE-2021-47240 (GCVE-0-2021-47240)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2026-08-05 08:46

Title

net: qrtr: fix OOB Read in qrtr_endpoint_post

Summary

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtr_endpoint_post Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong _size_ type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skb_put_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block.

Severity

8.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-23 21:23 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/f8111c0d7ed42ede4…
https://git.kernel.org/stable/c/26b8d10703a9be45d…
https://git.kernel.org/stable/c/960b08dd36de1e341…
https://git.kernel.org/stable/c/19892ab9c9d838e2e…
https://git.kernel.org/stable/c/ad9d24c9429e2159d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 194ccc88297ae78d0803adad83c6dcc369787c9e , < f8111c0d7ed42ede41a3d0d393b104de0730a8a6 (git) Affected: 194ccc88297ae78d0803adad83c6dcc369787c9e , < 26b8d10703a9be45d6097946b2b4011f7dd2c56f (git) Affected: 194ccc88297ae78d0803adad83c6dcc369787c9e , < 960b08dd36de1e341e3eb43d1c547513e338f4f8 (git) Affected: 194ccc88297ae78d0803adad83c6dcc369787c9e , < 19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe (git) Affected: 194ccc88297ae78d0803adad83c6dcc369787c9e , < ad9d24c9429e2159d1e279dc3a83191ccb4daf1d (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 4.19.196 , ≤ 4.19.* (semver) Unaffected: 5.4.128 , ≤ 5.4.* (semver) Unaffected: 5.10.46 , ≤ 5.10.* (semver) Unaffected: 5.12.13 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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JSON

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                "id": "CVE-2021-47240",
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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.

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-6H98-V544-XJ7Q

CVE-2021-47240 (GCVE-0-2021-47240)

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