{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63972", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.024Z", "datePublished": "2026-07-19T14:55:58.503Z", "dateUpdated": "2026-07-19T14:55:58.503Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:55:58.503Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Skip redundant detach on already-detached port\n\nWhen mana_per_port_queue_reset_work_handler() runs after a previous\ndetach succeeded but attach failed, the port is left in a detached\nstate with apc->tx_qp and apc->rxqs already freed. Calling\nmana_detach() again unconditionally leads to NULL pointer dereferences\nduring queue teardown.\n\nAdd an early exit in mana_detach() when the port is already in\ndetached state (!netif_device_present) for non-close callers, making\nit safe to call idempotently. This allows the queue reset handler and\nother recovery paths to simply retry mana_attach() without redundant\nteardown."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_en.c"], "versions": [{"version": "fb9f98e1041a30dd5766620a2a64cb472b54caa9", "lessThan": "c4152b4e28b3e550ec99351bf900e2c24c2608cc", "status": "affected", "versionType": "git"}, {"version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "lessThan": "7ae590797f9b5c240aaea5773f5f00977a42a846", "status": "affected", "versionType": "git"}, {"version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "lessThan": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3", "status": "affected", "versionType": "git"}, {"version": "6.18.33", "lessThan": "6.18.35", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_en.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.18.33", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c4152b4e28b3e550ec99351bf900e2c24c2608cc"}, {"url": "https://git.kernel.org/stable/c/7ae590797f9b5c240aaea5773f5f00977a42a846"}, {"url": "https://git.kernel.org/stable/c/5b05aa36ee24297d7296ca58dfd8c448d0e4cda3"}], "title": "net: mana: Skip redundant detach on already-detached port", "x_generator": {"engine": "bippy-1.2.0"}}}}

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