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CVE-2024-49977 (GCVE-0-2024-49977)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-05-23 15:54
VLAI
Title
net: stmmac: Fix zero-division error when disabling tc cbs
Summary
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix zero-division error when disabling tc cbs The commit b8c43360f6e4 ("net: stmmac: No need to calculate speed divider when offload is disabled") allows the "port_transmit_rate_kbps" to be set to a value of 0, which is then passed to the "div_s64" function when tc-cbs is disabled. This leads to a zero-division error. When tc-cbs is disabled, the idleslope, sendslope, and credit values the credit values are not required to be configured. Therefore, adding a return statement after setting the txQ mode to DCB when tc-cbs is disabled would prevent a zero-division error.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:33 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b4bca4722fda928810d024350493990de39f1e40 , < e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c (git)
Affected: 2145583e5995598f50d66f8710c86bb1e910ac46 , < b0da9504a528f05f97d926b4db74ff21917a33e9 (git)
Affected: 521d42a1c24d638241220d4b9fa7e7a0ed02b88e , < 5d43e1ad4567d67af2b42d3ab7c14152ffed25c6 (git)
Affected: a71b686418ee6bcb6d6365f7f6d838d9874d9c64 , < 03582f4752427f60817d896f1a827aff772bd31e (git)
Affected: b8c43360f6e424131fa81d3ba8792ad8ff25a09e , < e297a2bf56d12fd7f91a0c209eb6ea84361f3368 (git)
Affected: b8c43360f6e424131fa81d3ba8792ad8ff25a09e , < 837d9df9c0792902710149d1a5e0991520af0f93 (git)
Affected: b8c43360f6e424131fa81d3ba8792ad8ff25a09e , < 675faf5a14c14a2be0b870db30a70764df81e2df (git)
Affected: f01782804147a8c21f481b3342c83422c041d2c0 (git)
Affected: 5.10.221 , < 5.10.227 (semver)
Affected: 5.15.162 , < 5.15.168 (semver)
Affected: 6.1.96 , < 6.1.113 (semver)
Affected: 6.6.36 , < 6.6.55 (semver)
Affected: 6.9.7 , < 6.10 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: stmmac: Fix zero-division error when disabling tc cbs",
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Therefore, adding a return\\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\\nprevent a zero-division error.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: stmmac: Fix zero-division error when disabling tc cbs el commit b8c43360f6e4 (\\\"net: stmmac: No need to calculate speed divider when offload is disabled\\\") permite que \\\"port_transmit_rate_kbps\\\" se establezca en un valor de 0, que luego se pasa a la funci\u00f3n \\\"div_s64\\\" cuando tc-cbs est\u00e1 deshabilitado. Esto conduce a un error de divisi\u00f3n por cero. Cuando tc-cbs est\u00e1 deshabilitado, no es necesario configurar los valores idleslope, sendslope y credit. 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This leads to a zero-division error.\\n\\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\\ncredit values are not required to be configured. Therefore, adding a return\\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\\nprevent a zero-division error.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"5.10.221\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"5.15.162\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"6.1.96\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"6.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.9.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:54:12.965Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49977\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:54:12.965Z\", \"dateReserved\": \"2024-10-21T12:17:06.052Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:02:24.480Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.