{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74389", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.891Z", "datePublished": "2026-08-15T05:59:03.786Z", "dateUpdated": "2026-08-17T05:18:27.843Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:18:27.843Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix log flood after cmd_mbox failure\n\nhns_roce_cmd_mbox() is the command interface between driver and\nhardware. When hardware is abnormal, the unlimited error printings\nafter hns_roce_cmd_mbox() failure will cause log flood and even\nsystem crash.\n\nReplace ibdev_err() and ibdev_warn() with their ratelimited versions\nin the error handling path after hns_roce_cmd_mbox() (and its wrappers\nhns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/hns/hns_roce_cq.c", "drivers/infiniband/hw/hns/hns_roce_hw_v2.c", "drivers/infiniband/hw/hns/hns_roce_mr.c", "drivers/infiniband/hw/hns/hns_roce_srq.c"], "versions": [{"version": "9a4435375cd151e07c0c38fa601b00115986091b", "lessThan": "7d9fbee252f84de3e6947a40eec01481c9d8afbb", "status": "affected", "versionType": "git"}, {"version": "9a4435375cd151e07c0c38fa601b00115986091b", "lessThan": "66f44ec974ab372e4e1ee9eac4245237c94e8f68", "status": "affected", "versionType": "git"}, {"version": "9a4435375cd151e07c0c38fa601b00115986091b", "lessThan": "f3c9e84268e9fa613d40d6c138fb6969c35879b5", "status": "affected", "versionType": "git"}, {"version": "9a4435375cd151e07c0c38fa601b00115986091b", "lessThan": "bbd97d71e53e551890e4115ad9de46b5f2ac0858", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/hns/hns_roce_cq.c", "drivers/infiniband/hw/hns/hns_roce_hw_v2.c", "drivers/infiniband/hw/hns/hns_roce_mr.c", "drivers/infiniband/hw/hns/hns_roce_srq.c"], "versions": [{"version": "4.9", "status": "affected"}, {"version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7d9fbee252f84de3e6947a40eec01481c9d8afbb"}, {"url": "https://git.kernel.org/stable/c/66f44ec974ab372e4e1ee9eac4245237c94e8f68"}, {"url": "https://git.kernel.org/stable/c/f3c9e84268e9fa613d40d6c138fb6969c35879b5"}, {"url": "https://git.kernel.org/stable/c/bbd97d71e53e551890e4115ad9de46b5f2ac0858"}], "title": "RDMA/hns: Fix log flood after cmd_mbox failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/hw/hns/hns_roce_cq.c", "drivers/infiniband/hw/hns/hns_roce_hw_v2.c", "drivers/infiniband/hw/hns/hns_roce_mr.c", "drivers/infiniband/hw/hns/hns_roce_srq.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7d9fbee252f84de3e6947a40eec01481c9d8afbb", "status": "affected", "version": "9a4435375cd151e07c0c38fa601b00115986091b", "versionType": "git"}, {"lessThan": "66f44ec974ab372e4e1ee9eac4245237c94e8f68", "status": "affected", "version": "9a4435375cd151e07c0c38fa601b00115986091b", "versionType": "git"}, {"lessThan": "f3c9e84268e9fa613d40d6c138fb6969c35879b5", "status": "affected", "version": "9a4435375cd151e07c0c38fa601b00115986091b", "versionType": "git"}, {"lessThan": "bbd97d71e53e551890e4115ad9de46b5f2ac0858", "status": "affected", "version": "9a4435375cd151e07c0c38fa601b00115986091b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/hw/hns/hns_roce_cq.c", "drivers/infiniband/hw/hns/hns_roce_hw_v2.c", "drivers/infiniband/hw/hns/hns_roce_mr.c", "drivers/infiniband/hw/hns/hns_roce_srq.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.9"}, {"lessThan": "4.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix log flood after cmd_mbox failure\n\nhns_roce_cmd_mbox() is the command interface between driver and\nhardware. When hardware is abnormal, the unlimited error printings\nafter hns_roce_cmd_mbox() failure will cause log flood and even\nsystem crash.\n\nReplace ibdev_err() and ibdev_warn() with their ratelimited versions\nin the error handling path after hns_roce_cmd_mbox() (and its wrappers\nhns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails."}], "id": "CVE-2026-74389", "lastModified": "2026-08-17T06:19:33.950", "metrics": {}, "published": "2026-08-15T06:22:40.847", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/66f44ec974ab372e4e1ee9eac4245237c94e8f68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7d9fbee252f84de3e6947a40eec01481c9d8afbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bbd97d71e53e551890e4115ad9de46b5f2ac0858"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3c9e84268e9fa613d40d6c138fb6969c35879b5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: RDMA/hns: Fix log flood after cmd_mbox failure", "id": "2516897", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516897"}, "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"}, "cwe": "CWE-779", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nRDMA/hns: Fix log flood after cmd_mbox failure\nhns_roce_cmd_mbox() is the command interface between driver and\nhardware. When hardware is abnormal, the unlimited error printings\nafter hns_roce_cmd_mbox() failure will cause log flood and even\nsystem crash.\nReplace ibdev_err() and ibdev_warn() with their ratelimited versions\nin the error handling path after hns_roce_cmd_mbox() (and its wrappers\nhns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails.", "A flaw was found in the Linux kernel's RDMA/hns component. When the hardware experiences an abnormality, the `hns_roce_cmd_mbox()` command interface can fail. This failure leads to an uncontrolled flood of error messages, which can consume system resources and ultimately cause a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-74389", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74389\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74389\nhttps://lore.kernel.org/linux-cve-announce/2026081506-CVE-2026-74389-057b@gregkh/T"], "threat_severity": "Moderate"}