In the Linux kernel, the following vulnerability has been resolved: net: mana: Skip redundant detach on already-detached port When mana_per_port_queue_reset_work_handler() runs after a previous detach succeeded but attach failed, the port is left in a detached state with apc->tx_qp and apc->rxqs already freed. Calling mana_detach() again unconditionally leads to NULL pointer dereferences during queue teardown. Add an early exit in mana_detach() when the port is already in detached state (!netif_device_present) for non-close callers, making it safe to call idempotently. This allows the queue reset handler and other recovery paths to simply retry mana_attach() without redundant teardown.

zetlyn/cve-nvd vulnerability cve CVE-2026-63972 cpe cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* cpe cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* cpe cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* known 2026-07-19

https://nvd.nist.gov/vuln/detail/CVE-2026-63972

Properties

cvss	7.5 receipt Source NVD Its words `7.5` Read by `field:cve.metrics.cvssMetricV31[].cvssData.baseScore` Said since 2026-10-03 00:06 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "c4152b4e28b3e550ec99351bf900e2c24c2608cc", "status": "affected", "version": "fb9f98e1041a30dd5766620a2a64cb472b54caa9", "versionType": "git" }, { "lessThan": "7ae590797f9b5c240aaea5773f5f00977a42a846", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "6.18.35", "status": "affected", "version": "6.18.33", "versionType": "semver" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "7.0" }, { "lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.35", "versionType": "semver" }, { "lessThanOrEqual": "7.0.", "status": "unaffected", "version": "7.0.12", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "9CA0794D-D2B6-4D31-B5DB-30331CF0D9D7", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.18.33", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "928FFB59-94A1-4243-84F6-B3700D2F3B6E", "versionEndExcluding": "7.0.12", "versionStartIncluding": "7.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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." } ], "id": "CVE-2026-63972", "lastModified": "2026-10-02T19:41:02.587", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-07-19T16:17:16.283", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/5b05aa36ee24297d7296ca58dfd8c448d0e4cda3" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/7ae590797f9b5c240aaea5773f5f00977a42a846" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/c4152b4e28b3e550ec99351bf900e2c24c2608cc" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-476" } ], "source": "nvd@nist.gov", "type": "Primary" } ] } }
product	Linux receipt Source NVD Its words `Linux` Read by `field:cve.affected[].affectedData[].product` Said since 2026-10-03 00:06 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "c4152b4e28b3e550ec99351bf900e2c24c2608cc", "status": "affected", "version": "fb9f98e1041a30dd5766620a2a64cb472b54caa9", "versionType": "git" }, { "lessThan": "7ae590797f9b5c240aaea5773f5f00977a42a846", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "6.18.35", "status": "affected", "version": "6.18.33", "versionType": "semver" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "7.0" }, { "lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.35", "versionType": "semver" }, { "lessThanOrEqual": "7.0.", "status": "unaffected", "version": "7.0.12", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "9CA0794D-D2B6-4D31-B5DB-30331CF0D9D7", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.18.33", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "928FFB59-94A1-4243-84F6-B3700D2F3B6E", "versionEndExcluding": "7.0.12", "versionStartIncluding": "7.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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. 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status	Analyzed receipt Source NVD Its words `Analyzed` Read by `field:cve.vulnStatus` Said since 2026-10-03 00:06 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "c4152b4e28b3e550ec99351bf900e2c24c2608cc", "status": "affected", "version": "fb9f98e1041a30dd5766620a2a64cb472b54caa9", "versionType": "git" }, { "lessThan": "7ae590797f9b5c240aaea5773f5f00977a42a846", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "6.18.35", "status": "affected", "version": "6.18.33", "versionType": "semver" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "7.0" }, { "lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.35", "versionType": "semver" }, { "lessThanOrEqual": "7.0.", "status": "unaffected", "version": "7.0.12", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "9CA0794D-D2B6-4D31-B5DB-30331CF0D9D7", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.18.33", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "928FFB59-94A1-4243-84F6-B3700D2F3B6E", "versionEndExcluding": "7.0.12", "versionStartIncluding": "7.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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. 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vendor	Linux receipt Source NVD Its words `Linux` Read by `field:cve.affected[].affectedData[].vendor` Said since 2026-10-03 00:06 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "c4152b4e28b3e550ec99351bf900e2c24c2608cc", "status": "affected", "version": "fb9f98e1041a30dd5766620a2a64cb472b54caa9", "versionType": "git" }, { "lessThan": "7ae590797f9b5c240aaea5773f5f00977a42a846", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3", "status": "affected", "version": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732", "versionType": "git" }, { "lessThan": "6.18.35", "status": "affected", "version": "6.18.33", "versionType": "semver" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/net/ethernet/microsoft/mana/mana_en.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "7.0" }, { "lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.18.", "status": "unaffected", "version": "6.18.35", "versionType": "semver" }, { "lessThanOrEqual": "7.0.", "status": "unaffected", "version": "7.0.12", "versionType": "semver" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix" } ] } ], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "9CA0794D-D2B6-4D31-B5DB-30331CF0D9D7", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.18.33", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel::::::::", "matchCriteriaId": "928FFB59-94A1-4243-84F6-B3700D2F3B6E", "versionEndExcluding": "7.0.12", "versionStartIncluding": "7.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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." } ], "id": "CVE-2026-63972", "lastModified": "2026-10-02T19:41:02.587", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary" } ] }, "published": "2026-07-19T16:17:16.283", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/5b05aa36ee24297d7296ca58dfd8c448d0e4cda3" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/7ae590797f9b5c240aaea5773f5f00977a42a846" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "url": "https://git.kernel.org/stable/c/c4152b4e28b3e550ec99351bf900e2c24c2608cc" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-476" } ], "source": "nvd@nist.gov", "type": "Primary" } ] } }

Text

In the Linux kernel, the following vulnerability has been resolved: net: mana: Skip redundant detach on already-detached port When mana_per_port_queue_reset_work_handler() runs after a previous detach succeeded but attach failed, the port is left in a detached state with apc->tx_qp and apc->rxqs already freed. Calling mana_detach() again unconditionally leads to NULL pointer dereferences during queue teardown. Add an early exit in mana_detach() when the port is already in detached state (!netif_device_present) for non-close callers, making it safe to call idempotently. This allows the queue reset handler and other recovery paths to simply retry mana_attach() without redundant teardown.