Vulnerability-Lookup

GHSA-5C7W-V73J-6CR4

Vulnerability from github – Published: 2024-03-25 12:30 – Updated: 2025-03-13 21:31

Details

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

net: dsa: fix a crash if ->get_sset_count() fails

If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes.

Fix this by checking for error codes and changing the type of "i" to just int.

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-2021-47159"
  ],
  "database_specific": {
    "cwe_ids": [
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    "github_reviewed_at": null,
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    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix a crash if -\u003eget_sset_count() fails\n\nIf ds-\u003eops-\u003eget_sset_count() fails then it \"count\" is a negative error\ncode such as -EOPNOTSUPP.  Because \"i\" is an unsigned int, the negative\nerror code is type promoted to a very high value and the loop will\ncorrupt memory until the system crashes.\n\nFix this by checking for error codes and changing the type of \"i\" to\njust int.",
  "id": "GHSA-5c7w-v73j-6cr4",
  "modified": "2025-03-13T21:31:01Z",
  "published": "2024-03-25T12:30:51Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47159"
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CVE-2021-47159 (GCVE-0-2021-47159)

Vulnerability from cvelistv5 – Published: 2024-03-25 09:16 – Updated: 2026-08-05 08:46

Title

net: dsa: fix a crash if ->get_sset_count() fails

Summary

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/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 2024-09-10 15:54 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6992 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/0f2cb08c57edefb0e…
https://git.kernel.org/stable/c/ce5355f140a798701…
https://git.kernel.org/stable/c/caff86f85512b8e0d…
https://git.kernel.org/stable/c/7b22466648a4f8e3e…
https://git.kernel.org/stable/c/a269333fa5c0c8e53…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: badf3ada60ab8f76f9488dc8f5c0c57f70682f5a , < 0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 (git) Affected: badf3ada60ab8f76f9488dc8f5c0c57f70682f5a , < ce5355f140a7987011388c7e30c4f8fbe180d3e8 (git) Affected: badf3ada60ab8f76f9488dc8f5c0c57f70682f5a , < caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 (git) Affected: badf3ada60ab8f76f9488dc8f5c0c57f70682f5a , < 7b22466648a4f8e3e94f57ca428d1531866d1373 (git) Affected: badf3ada60ab8f76f9488dc8f5c0c57f70682f5a , < a269333fa5c0c8e53c92b5a28a6076a28cde3e83 (git)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 4.19.193 , ≤ 4.19.* (semver) Unaffected: 5.4.124 , ≤ 5.4.* (semver) Unaffected: 5.10.42 , ≤ 5.10.* (semver) Unaffected: 5.12.9 , ≤ 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 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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