{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80667", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.782Z", "datePublished": "2026-08-28T06:49:09.277Z", "dateUpdated": "2026-08-28T06:49:09.277Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-28T06:49:09.277Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: LAG, MPESW, Fix missing complete() on devcom error\n\nmlx5_mpesw_work() returned without calling complete() when\nmlx5_lag_get_devcom_comp() returned NULL. A caller that queued the\nwork and waited on mpesww->comp would block indefinitely.\n\nFunnel the early-return path through a new \"complete\" label so the\nwaiter is always woken."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c"], "versions": [{"version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "lessThan": "68cdbe498da8475cfd49591954e3db8fc6582eda", "status": "affected", "versionType": "git"}, {"version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "lessThan": "6a802de97a8bf8d5f1e4a048c67de9a8c2d2f9eb", "status": "affected", "versionType": "git"}, {"version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "lessThan": "4d720c6c60e1852253b68aeee3044ebed5243adb", "status": "affected", "versionType": "git"}, {"version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "lessThan": "d4b85f9a668b9c44216bb78daf4ec1a915cc92d1", "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/net/ethernet/mellanox/mlx5/core/lag/mpesw.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "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": "6.7", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/68cdbe498da8475cfd49591954e3db8fc6582eda"}, {"url": "https://git.kernel.org/stable/c/6a802de97a8bf8d5f1e4a048c67de9a8c2d2f9eb"}, {"url": "https://git.kernel.org/stable/c/4d720c6c60e1852253b68aeee3044ebed5243adb"}, {"url": "https://git.kernel.org/stable/c/d4b85f9a668b9c44216bb78daf4ec1a915cc92d1"}], "title": "net/mlx5: LAG, MPESW, Fix missing complete() on devcom error", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "68cdbe498da8475cfd49591954e3db8fc6582eda", "status": "affected", "version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "versionType": "git"}, {"lessThan": "6a802de97a8bf8d5f1e4a048c67de9a8c2d2f9eb", "status": "affected", "version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "versionType": "git"}, {"lessThan": "4d720c6c60e1852253b68aeee3044ebed5243adb", "status": "affected", "version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "versionType": "git"}, {"lessThan": "d4b85f9a668b9c44216bb78daf4ec1a915cc92d1", "status": "affected", "version": "b430c1b4f63be51dde175a1dd3addba65ca24e2b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "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\nnet/mlx5: LAG, MPESW, Fix missing complete() on devcom error\n\nmlx5_mpesw_work() returned without calling complete() when\nmlx5_lag_get_devcom_comp() returned NULL. A caller that queued the\nwork and waited on mpesww->comp would block indefinitely.\n\nFunnel the early-return path through a new \"complete\" label so the\nwaiter is always woken."}], "id": "CVE-2026-80667", "lastModified": "2026-08-28T08:16:51.973", "metrics": {}, "published": "2026-08-28T08:16:51.973", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d720c6c60e1852253b68aeee3044ebed5243adb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68cdbe498da8475cfd49591954e3db8fc6582eda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6a802de97a8bf8d5f1e4a048c67de9a8c2d2f9eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4b85f9a668b9c44216bb78daf4ec1a915cc92d1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net/mlx5: LAG, MPESW, Fix missing complete() on devcom error", "id": "2525381", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525381"}, "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-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5: LAG, MPESW, Fix missing complete() on devcom error\nmlx5_mpesw_work() returned without calling complete() when\nmlx5_lag_get_devcom_comp() returned NULL. A caller that queued the\nwork and waited on mpesww->comp would block indefinitely.\nFunnel the early-return path through a new \"complete\" label so the\nwaiter is always woken.", "A flaw was found in the Linux kernel's Mellanox (mlx5) network driver, specifically within the Multi-Port Ethernet Switch (MPESW) work handling for Link Aggregation Groups (LAG). When the `mlx5_lag_get_devcom_comp()` function returns a null value, the `mlx5_mpesw_work()` function fails to call `complete()`. This oversight can cause a process waiting for the work to finish to block indefinitely, leading to a denial of service (DoS) for the affected system."], "name": "CVE-2026-80667", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80667\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80667\nhttps://lore.kernel.org/linux-cve-announce/2026082847-CVE-2026-80667-0552@gregkh/T"], "threat_severity": "Low"}