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": [
      "CWE-835"
    ],
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    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-25T10:15:08Z",
    "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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    {
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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: 2026-05-11 13:49

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

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5C7W-V73J-6CR4

CVE-2021-47159 (GCVE-0-2021-47159)

Tags

Sightings

Nomenclature