{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50018", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.063Z", "datePublished": "2024-10-21T18:54:08.468Z", "dateUpdated": "2024-11-05T09:53:34.870Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:53:34.870Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: napi: Prevent overflow of napi_defer_hard_irqs\n\nIn commit 6f8b12d661d0 (\"net: napi: add hard irqs deferral feature\")\nnapi_defer_irqs was added to net_device and napi_defer_irqs_count was\nadded to napi_struct, both as type int.\n\nThis value never goes below zero, so there is not reason for it to be a\nsigned int. Change the type for both from int to u32, and add an\noverflow check to sysfs to limit the value to S32_MAX.\n\nThe limit of S32_MAX was chosen because the practical limit before this\npatch was S32_MAX (anything larger was an overflow) and thus there are\nno behavioral changes introduced. If the extra bit is needed in the\nfuture, the limit can be raised.\n\nBefore this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\n$ cat /sys/class/net/eth4/napi_defer_hard_irqs\n-2147483647\n\nAfter this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\nbash: line 0: echo: write error: Numerical result out of range\n\nSimilarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:\n\ninclude/linux/netdevice.h: unsigned int tx_queue_len;\n\nAnd has an overflow check:\n\ndev_change_tx_queue_len(..., unsigned long new_len):\n\n if (new_len != (unsigned int)new_len)\n return -ERANGE;"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["Documentation/networking/net_cachelines/net_device.rst", "include/linux/netdevice.h", "net/core/net-sysfs.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "d694ad8b7e50", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "5e753b743d3b", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "08062af0a521", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["Documentation/networking/net_cachelines/net_device.rst", "include/linux/netdevice.h", "net/core/net-sysfs.c"], "versions": [{"version": "6.10.14", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/d694ad8b7e5004df86ecd415cb2320d543723672"}, {"url": "https://git.kernel.org/stable/c/5e753b743d3b38a3e10be666c32c5434423d0093"}, {"url": "https://git.kernel.org/stable/c/08062af0a52107a243f7608fd972edb54ca5b7f8"}], "title": "net: napi: Prevent overflow of napi_defer_hard_irqs", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-50018", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:27:45.942667Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:47.681Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-50018", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:27:45.942667Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:27:49.105Z"}}], "cna": {"title": "net: napi: Prevent overflow of napi_defer_hard_irqs", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f4", "lessThan": "d694ad8b7e50", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "5e753b743d3b", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "08062af0a521", "versionType": "git"}], "programFiles": ["Documentation/networking/net_cachelines/net_device.rst", "include/linux/netdevice.h", "net/core/net-sysfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "6.10.14", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11.3", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["Documentation/networking/net_cachelines/net_device.rst", "include/linux/netdevice.h", "net/core/net-sysfs.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d694ad8b7e5004df86ecd415cb2320d543723672"}, {"url": "https://git.kernel.org/stable/c/5e753b743d3b38a3e10be666c32c5434423d0093"}, {"url": "https://git.kernel.org/stable/c/08062af0a52107a243f7608fd972edb54ca5b7f8"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: napi: Prevent overflow of napi_defer_hard_irqs\n\nIn commit 6f8b12d661d0 (\"net: napi: add hard irqs deferral feature\")\nnapi_defer_irqs was added to net_device and napi_defer_irqs_count was\nadded to napi_struct, both as type int.\n\nThis value never goes below zero, so there is not reason for it to be a\nsigned int. Change the type for both from int to u32, and add an\noverflow check to sysfs to limit the value to S32_MAX.\n\nThe limit of S32_MAX was chosen because the practical limit before this\npatch was S32_MAX (anything larger was an overflow) and thus there are\nno behavioral changes introduced. If the extra bit is needed in the\nfuture, the limit can be raised.\n\nBefore this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\n$ cat /sys/class/net/eth4/napi_defer_hard_irqs\n-2147483647\n\nAfter this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\nbash: line 0: echo: write error: Numerical result out of range\n\nSimilarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:\n\ninclude/linux/netdevice.h: unsigned int tx_queue_len;\n\nAnd has an overflow check:\n\ndev_change_tx_queue_len(..., unsigned long new_len):\n\n if (new_len != (unsigned int)new_len)\n return -ERANGE;"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:53:34.870Z"}}}, "cveMetadata": {"cveId": "CVE-2024-50018", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:53:34.870Z", "dateReserved": "2024-10-21T12:17:06.063Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T18:54:08.468Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "652638C5-5F25-4DF3-AD42-DD3252A97152", "versionEndExcluding": "6.10.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "54D9C704-D679-41A7-9C40-10A6B1E7FFE9", "versionEndExcluding": "6.11.3", "versionStartIncluding": "6.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: napi: Prevent overflow of napi_defer_hard_irqs\n\nIn commit 6f8b12d661d0 (\"net: napi: add hard irqs deferral feature\")\nnapi_defer_irqs was added to net_device and napi_defer_irqs_count was\nadded to napi_struct, both as type int.\n\nThis value never goes below zero, so there is not reason for it to be a\nsigned int. Change the type for both from int to u32, and add an\noverflow check to sysfs to limit the value to S32_MAX.\n\nThe limit of S32_MAX was chosen because the practical limit before this\npatch was S32_MAX (anything larger was an overflow) and thus there are\nno behavioral changes introduced. If the extra bit is needed in the\nfuture, the limit can be raised.\n\nBefore this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\n$ cat /sys/class/net/eth4/napi_defer_hard_irqs\n-2147483647\n\nAfter this patch:\n\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\nbash: line 0: echo: write error: Numerical result out of range\n\nSimilarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:\n\ninclude/linux/netdevice.h: unsigned int tx_queue_len;\n\nAnd has an overflow check:\n\ndev_change_tx_queue_len(..., unsigned long new_len):\n\n if (new_len != (unsigned int)new_len)\n return -ERANGE;"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: napi: Prevenir el desbordamiento de napi_defer_hard_irqs En el commit 6f8b12d661d0 (\"net: napi: agregar caracter\u00edstica de aplazamiento de irqs duras\") se agreg\u00f3 napi_defer_irqs a net_device y napi_defer_irqs_count a napi_struct, ambos como tipo int. Este valor nunca baja de cero, por lo que no hay raz\u00f3n para que sea un int con signo. Cambie el tipo para ambos de int a u32 y agregue una comprobaci\u00f3n de desbordamiento a sysfs para limitar el valor a S32_MAX. El l\u00edmite de S32_MAX se eligi\u00f3 porque el l\u00edmite pr\u00e1ctico antes de este parche era S32_MAX (cualquier valor mayor era un desbordamiento) y, por lo tanto, no se introdujeron cambios de comportamiento. Si se necesita el bit adicional en el futuro, se puede aumentar el l\u00edmite. Antes de este parche: $ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' $ cat /sys/class/net/eth4/napi_defer_hard_irqs -2147483647 Despu\u00e9s de este parche: $ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' bash: l\u00ednea 0: echo: error de escritura: resultado num\u00e9rico fuera de rango De manera similar, /sys/class/net/XXXXX/tx_queue_len se define como unsigned: include/linux/netdevice.h: unsigned int tx_queue_len; Y tiene una comprobaci\u00f3n de desbordamiento: dev_change_tx_queue_len(..., unsigned long new_len): if (new_len != (unsigned int)new_len) return -ERANGE;"}], "id": "CVE-2024-50018", "lastModified": "2024-10-25T20:14:30.820", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-10-21T19:15:05.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/08062af0a52107a243f7608fd972edb54ca5b7f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5e753b743d3b38a3e10be666c32c5434423d0093"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d694ad8b7e5004df86ecd415cb2320d543723672"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: napi: Prevent overflow of napi_defer_hard_irqs", "id": "2320480", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320480"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: napi: Prevent overflow of napi_defer_hard_irqs\nIn commit 6f8b12d661d0 (\"net: napi: add hard irqs deferral feature\")\nnapi_defer_irqs was added to net_device and napi_defer_irqs_count was\nadded to napi_struct, both as type int.\nThis value never goes below zero, so there is not reason for it to be a\nsigned int. Change the type for both from int to u32, and add an\noverflow check to sysfs to limit the value to S32_MAX.\nThe limit of S32_MAX was chosen because the practical limit before this\npatch was S32_MAX (anything larger was an overflow) and thus there are\nno behavioral changes introduced. If the extra bit is needed in the\nfuture, the limit can be raised.\nBefore this patch:\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\n$ cat /sys/class/net/eth4/napi_defer_hard_irqs\n-2147483647\nAfter this patch:\n$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'\nbash: line 0: echo: write error: Numerical result out of range\nSimilarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:\ninclude/linux/netdevice.h: unsigned int tx_queue_len;\nAnd has an overflow check:\ndev_change_tx_queue_len(..., unsigned long new_len):\nif (new_len != (unsigned int)new_len)\nreturn -ERANGE;"], "name": "CVE-2024-50018", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50018\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50018\nhttps://lore.kernel.org/linux-cve-announce/2024102111-CVE-2024-50018-65e9@gregkh/T"], "threat_severity": "Moderate"}