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

Vulnerability from cvelistv5 – Published: 2024-03-25 09:16 – Updated: 2026-08-05 08:46
VLAI
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 (v2.0.3)
Assigner
References
Impacted 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)
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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)
Create a notification for this product.
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      "cve": "CVE-2021-47159",
      "id": "CVE-2021-47159",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: dsa: fix a crash if -\u003eget_sset_count() fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47159.json",
      "version": "3"
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      "current_release_date": "2026-08-05T01:22:51Z",
      "cve": "CVE-2021-47159",
      "id": "CVE-2021-47159",
      "initial_release_date": "2024-03-27T04:26:00Z",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "210",
      "product_status:recommended": "70",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47159",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47159.json",
      "version": "25"
    },
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      "dataType": "CVE_RECORD",
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  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.