Vulnerability-Lookup

CVE-2024-46834 (GCVE-0-2024-46834)

Vulnerability from cvelistv5 – Published: 2024-09-27 12:39 – Updated: 2026-08-05 11:38

Title

ethtool: fail closed if we can't get max channel used in indirection tables

Summary

In the Linux kernel, the following vulnerability has been resolved: ethtool: fail closed if we can't get max channel used in indirection tables Commit 0d1b7d6c9274 ("bnxt: fix crashes when reducing ring count with active RSS contexts") proves that allowing indirection table to contain channels with out of bounds IDs may lead to crashes. Currently the max channel check in the core gets skipped if driver can't fetch the indirection table or when we can't allocate memory. Both of those conditions should be extremely rare but if they do happen we should try to be safe and fail the channel change.

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 2024-09-29 14:03 UTC

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/101737d8b88dbd4be…
https://git.kernel.org/stable/c/2899d58462ba86828…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: d4ab4286276fcd6c155bafdf4422b712068d2516 , < 101737d8b88dbd4be6010bac398fe810f1950036 (git) Affected: d4ab4286276fcd6c155bafdf4422b712068d2516 , < 2899d58462ba868287d6ff3acad3675e7adf934f (git)	guessed
Linux	Linux	Affected: 4.6 Unaffected: 0 , < 4.6 (semver) Unaffected: 6.10.10 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)	guessed

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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46834\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T14:03:28.433366Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T14:03:29.519Z\"}}], \"cna\": {\"title\": \"ethtool: fail closed if we can\u0027t get max channel used in indirection tables\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d4ab4286276fcd6c155bafdf4422b712068d2516\", \"lessThan\": \"101737d8b88dbd4be6010bac398fe810f1950036\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d4ab4286276fcd6c155bafdf4422b712068d2516\", \"lessThan\": \"2899d58462ba868287d6ff3acad3675e7adf934f\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ethtool/channels.c\", \"net/ethtool/common.c\", \"net/ethtool/common.h\", \"net/ethtool/ioctl.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.10.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ethtool/channels.c\", \"net/ethtool/common.c\", \"net/ethtool/common.h\", \"net/ethtool/ioctl.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/101737d8b88dbd4be6010bac398fe810f1950036\"}, {\"url\": \"https://git.kernel.org/stable/c/2899d58462ba868287d6ff3acad3675e7adf934f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nethtool: fail closed if we can\u0027t get max channel used in indirection tables\\n\\nCommit 0d1b7d6c9274 (\\\"bnxt: fix crashes when reducing ring count with\\nactive RSS contexts\\\") proves that allowing indirection table to contain\\nchannels with out of bounds IDs may lead to crashes. Currently the\\nmax channel check in the core gets skipped if driver can\u0027t fetch\\nthe indirection table or when we can\u0027t allocate memory.\\n\\nBoth of those conditions should be extremely rare but if they do\\nhappen we should try to be safe and fail the channel change.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.10\", \"versionStartIncluding\": \"4.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"4.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:53:28.772Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46834\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:53:28.772Z\", \"dateReserved\": \"2024-09-11T15:12:18.287Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-27T12:39:31.110Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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CVE-2024-46834 (GCVE-0-2024-46834)

Tags

Sightings

Nomenclature

Related by attack behaviour