CVE-2024-41066 (GCVE-0-2024-41066)

Vulnerability from cvelistv5 – Published: 2024-07-29 14:57 – Updated: 2026-08-05 11:35
VLAI
Title
ibmvnic: Add tx check to prevent skb leak
Summary
In the Linux kernel, the following vulnerability has been resolved: ibmvnic: Add tx check to prevent skb leak Below is a summary of how the driver stores a reference to an skb during transmit: tx_buff[free_map[consumer_index]]->skb = new_skb; free_map[consumer_index] = IBMVNIC_INVALID_MAP; consumer_index ++; Where variable data looks like this: free_map == [4, IBMVNIC_INVALID_MAP, IBMVNIC_INVALID_MAP, 0, 3] consumer_index^ tx_buff == [skb=null, skb=<ptr>, skb=<ptr>, skb=null, skb=null] The driver has checks to ensure that free_map[consumer_index] pointed to a valid index but there was no check to ensure that this index pointed to an unused/null skb address. So, if, by some chance, our free_map and tx_buff lists become out of sync then we were previously risking an skb memory leak. This could then cause tcp congestion control to stop sending packets, eventually leading to ETIMEDOUT. Therefore, add a conditional to ensure that the skb address is null. If not then warn the user (because this is still a bug that should be patched) and free the old pointer to prevent memleak/tcp problems.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 , < 16ad1557cae582e79bb82dddd612d9bdfaa11d4c (git)
Affected: 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 , < 267c61c4afed0ff9a2e83462abad3f41d8ca1f06 (git)
Affected: 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 , < e7b75def33eae61ddaad6cb616c517dc3882eb2a (git)
Affected: 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 , < 0983d288caf984de0202c66641577b739caad561 (git)
Affected: 1a64564eee05128f773930649edfdd50cbe80656 (git)
Affected: 5142c39253385702a4de8f897027e1d76fc333de (git)
Affected: 5.12.17 , < 5.13 (semver)
Affected: 5.13.2 , < 5.14 (semver)
Create a notification for this product.
Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 6.1.101 , ≤ 6.1.* (semver)
Unaffected: 6.6.42 , ≤ 6.6.* (semver)
Unaffected: 6.9.11 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "version": "3"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-41066\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-29T15:15:14.480\",\"lastModified\":\"2026-08-04T11:19:25.557\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nibmvnic: Add tx check to prevent skb leak\\n\\nBelow is a summary of how the driver stores a reference to an skb during\\ntransmit:\\n    tx_buff[free_map[consumer_index]]-\u003eskb = new_skb;\\n    free_map[consumer_index] = IBMVNIC_INVALID_MAP;\\n    consumer_index ++;\\nWhere variable data looks like this:\\n    free_map == [4, IBMVNIC_INVALID_MAP, IBMVNIC_INVALID_MAP, 0, 3]\\n                                               \\tconsumer_index^\\n    tx_buff == [skb=null, skb=\u003cptr\u003e, skb=\u003cptr\u003e, skb=null, skb=null]\\n\\nThe driver has checks to ensure that free_map[consumer_index] pointed to\\na valid index but there was no check to ensure that this index pointed\\nto an unused/null skb address. So, if, by some chance, our free_map and\\ntx_buff lists become out of sync then we were previously risking an\\nskb memory leak. This could then cause tcp congestion control to stop\\nsending packets, eventually leading to ETIMEDOUT.\\n\\nTherefore, add a conditional to ensure that the skb address is null. If\\nnot then warn the user (because this is still a bug that should be\\npatched) and free the old pointer to prevent memleak/tcp problems.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ibmvnic: agregue verificaci\u00f3n de tx para evitar fugas de skb A continuaci\u00f3n se muestra un resumen de c\u00f3mo el controlador almacena una referencia a un skb durante la transmisi\u00f3n: tx_buff[free_map[consumer_index]]-\u0026gt;skb = new_skb ; free_map[consumer_index] = IBMVNIC_INVALID_MAP; consumer_index++; Donde los datos variables se ven as\u00ed: free_map == [4, IBMVNIC_INVALID_MAP, IBMVNIC_INVALID_MAP, 0, 3] consumer_index^ tx_buff == [skb=null, skb=, skb=, skb=null, skb=null ] El controlador tiene comprobaciones para garantizar que free_map[consumer_index] apunte a un \u00edndice v\u00e1lido, pero no hubo ninguna verificaci\u00f3n para garantizar que este \u00edndice apunte a una direcci\u00f3n skb nula o no utilizada. Entonces, si, por casualidad, nuestras listas free_map y tx_buff no est\u00e1n sincronizadas, entonces est\u00e1bamos arriesg\u00e1ndonos a una p\u00e9rdida de memoria skb. Esto podr\u00eda provocar que el control de congesti\u00f3n de TCP deje de enviar paquetes, lo que eventualmente provocar\u00eda ETIMEDOUT. Por lo tanto, agregue un condicional para garantizar que la direcci\u00f3n skb sea nula. De lo contrario, advierta al usuario (porque todav\u00eda es un error que debe corregirse) y libere el puntero antiguo para evitar problemas de memleak/tcp.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/ibm/ibmvnic.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8\",\"lessThan\":\"16ad1557cae582e79bb82dddd612d9bdfaa11d4c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8\",\"lessThan\":\"267c61c4afed0ff9a2e83462abad3f41d8ca1f06\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8\",\"lessThan\":\"e7b75def33eae61ddaad6cb616c517dc3882eb2a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8\",\"lessThan\":\"0983d288caf984de0202c66641577b739caad561\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a64564eee05128f773930649edfdd50cbe80656\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5142c39253385702a4de8f897027e1d76fc333de\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.12.17\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.13.2\",\"lessThan\":\"5.14\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/ibm/ibmvnic.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.101\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.42\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.11\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T16:21:52.759335Z\",\"id\":\"CVE-2024-41066\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:44:18+00:00",
      "cve": "CVE-2024-41066",
      "id": "CVE-2024-41066",
      "initial_release_date": "2024-07-29T00:00:00+00:00",
      "product_status:fixed": "663",
      "product_status:known_affected": "136",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ibmvnic: Add tx check to prevent skb leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-41066.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-25T01:44:06Z",
      "cve": "CVE-2024-41066",
      "id": "CVE-2024-41066",
      "initial_release_date": "2024-08-06T02:01:27Z",
      "product_status:known_affected": "453",
      "product_status:known_not_affected": "6",
      "product_status:recommended": "762",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-41066",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-41066.json",
      "version": "115"
    },
    "vulnrichment": {
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If\\nnot then warn the user (because this is still a bug that should be\\npatched) and free the old pointer to prevent memleak/tcp problems.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.101\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.42\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.11\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.12.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.13.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:51:53.801Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-41066\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:51:53.801Z\", \"dateReserved\": \"2024-07-12T12:17:45.630Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-29T14:57:27.832Z\", \"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.