CVE-2022-48814

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But there is one more which\napplies here.\n\nIf the DSA master itself is on a bus that calls ->remove from ->shutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the seville switch driver on shutdown.\n\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don't use devres at all.\n\nThe seville driver has a code structure that could accommodate both the\nmdiobus_unregister and mdiobus_free calls, but it has an external\ndependency upon mscc_miim_setup() from mdio-mscc-miim.c, which calls\ndevm_mdiobus_alloc_size() on its behalf. So rather than restructuring\nthat, and exporting yet one more symbol mscc_miim_teardown(), let's work\nwith devres and replace of_mdiobus_register with the devres variant.\nWhen we use all-devres, we can ensure that devres doesn't free a\nstill-registered bus (it either runs both callbacks, or none)."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/dsa/ocelot/seville_vsc9953.c"], "versions": [{"version": "ac3a68d56651c3dad2c12c7afce065fe15267f44", "lessThan": "1d13e7221035947c62800c9d3d99b4ed570e27e7", "status": "affected", "versionType": "git"}, {"version": "ac3a68d56651c3dad2c12c7afce065fe15267f44", "lessThan": "0e816362d823cd46c666e64d8bffe329ee22f4cc", "status": "affected", "versionType": "git"}, {"version": "ac3a68d56651c3dad2c12c7afce065fe15267f44", "lessThan": "bd488afc3b39e045ba71aab472233f2a78726e7b", "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/dsa/ocelot/seville_vsc9953.c"], "versions": [{"version": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.27", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.10", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17", "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": "5.9", "versionEndExcluding": "5.15.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.16.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1d13e7221035947c62800c9d3d99b4ed570e27e7"}, {"url": "https://git.kernel.org/stable/c/0e816362d823cd46c666e64d8bffe329ee22f4cc"}, {"url": "https://git.kernel.org/stable/c/bd488afc3b39e045ba71aab472233f2a78726e7b"}], "title": "net: dsa: seville: register the mdiobus under devres", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:25:01.621Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/1d13e7221035947c62800c9d3d99b4ed570e27e7", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/0e816362d823cd46c666e64d8bffe329ee22f4cc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/bd488afc3b39e045ba71aab472233f2a78726e7b", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48814", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:58:22.016572Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:12.849Z"}}]}}

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But there is one more which\napplies here.\n\nIf the DSA master itself is on a bus that calls ->remove from ->shutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the seville switch driver on shutdown.\n\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don't use devres at all.\n\nThe seville driver has a code structure that could accommodate both the\nmdiobus_unregister and mdiobus_free calls, but it has an external\ndependency upon mscc_miim_setup() from mdio-mscc-miim.c, which calls\ndevm_mdiobus_alloc_size() on its behalf. So rather than restructuring\nthat, and exporting yet one more symbol mscc_miim_teardown(), let's work\nwith devres and replace of_mdiobus_register with the devres variant.\nWhen we use all-devres, we can ensure that devres doesn't free a\nstill-registered bus (it either runs both callbacks, or none)."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.27", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16.10", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.17", "versionStartIncluding": "5.9"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:23:48.836Z"}}}, "cveMetadata": {"cveId": "CVE-2022-48814", "state": "PUBLISHED", "dateUpdated": "2025-05-04T08:23:48.836Z", "dateReserved": "2024-07-16T11:38:08.899Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-07-16T11:44:03.261Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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But there is one more which\napplies here.\n\nIf the DSA master itself is on a bus that calls ->remove from ->shutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the seville switch driver on shutdown.\n\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don't use devres at all.\n\nThe seville driver has a code structure that could accommodate both the\nmdiobus_unregister and mdiobus_free calls, but it has an external\ndependency upon mscc_miim_setup() from mdio-mscc-miim.c, which calls\ndevm_mdiobus_alloc_size() on its behalf. So rather than restructuring\nthat, and exporting yet one more symbol mscc_miim_teardown(), let's work\nwith devres and replace of_mdiobus_register with the devres variant.\nWhen we use all-devres, we can ensure that devres doesn't free a\nstill-registered bus (it either runs both callbacks, or none)."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net: dsa: seville: registrar el mdiobus bajo devres Como se explica en commits: 74b6d7d13307 (\"net: dsa: realtek: registrar el bus MDIO bajo devres\") 5135e96a3dd2 (\"net: dsa: no asigne el esclavo_mii_bus usando devres\") mdiobus_free() entrar\u00e1 en p\u00e1nico cuando se llame desde devm_mdiobus_free() &lt;- devres_release_all() &lt;- __device_release_driver(), y ese mdiobus no fue anulado previamente. El conmutador Sevilla VSC9959 es un dispositivo de plataforma, por lo que el conjunto inicial de restricciones que pens\u00e9 que causar\u00edan esto (buses I2C o SPI que llaman -&gt;eliminar encendido -&gt;apagar) no se aplican. Pero hay algo m\u00e1s que se aplica aqu\u00ed. Si el maestro DSA est\u00e1 en un bus que llama -&gt;remove from -&gt;shutdown (como dpaa2-eth, que est\u00e1 en el bus fsl-mc), hay un enlace de dispositivo entre el conmutador y el maestro DSA, y device_links_unbind_consumers( ) desvincular\u00e1 el controlador del interruptor de Sevilla al apagarlo. Por lo tanto, se debe aplicar el mismo tratamiento a todos los controladores de conmutador DSA, que es: usar devres tanto para la asignaci\u00f3n como para el registro de mdiobus, o no usar devres en absoluto. El controlador Sevilla tiene una estructura de c\u00f3digo que podr\u00eda acomodar las llamadas mdiobus_unregister y mdiobus_free, pero tiene una dependencia externa de mscc_miim_setup() de mdio-mscc-miim.c, que llama a devm_mdiobus_alloc_size() en su nombre. Entonces, en lugar de reestructurar eso y exportar un s\u00edmbolo m\u00e1s mscc_miim_teardown(), trabajemos con devres y reemplacemos of_mdiobus_register con la variante devres. Cuando usamos all-devres, podemos asegurarnos de que devres no libere un bus a\u00fan registrado (ejecuta ambas devoluciones de llamada o ninguna)."}], "id": "CVE-2022-48814", "lastModified": "2026-06-17T05:16:15.950", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48814", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:58:22.016572Z", "version": "2.0.3"}}]}, "published": "2024-07-16T12:15:05.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0e816362d823cd46c666e64d8bffe329ee22f4cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1d13e7221035947c62800c9d3d99b4ed570e27e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd488afc3b39e045ba71aab472233f2a78726e7b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0e816362d823cd46c666e64d8bffe329ee22f4cc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1d13e7221035947c62800c9d3d99b4ed570e27e7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd488afc3b39e045ba71aab472233f2a78726e7b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: dsa: seville: register the mdiobus under devres", "id": "2298153", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2298153"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: dsa: seville: register the mdiobus under devres\nAs explained in commits:\n74b6d7d13307 (\"net: dsa: realtek: register the MDIO bus under devres\")\n5135e96a3dd2 (\"net: dsa: don't allocate the slave_mii_bus using devres\")\nmdiobus_free() will panic when called from devm_mdiobus_free() <-\ndevres_release_all() <- __device_release_driver(), and that mdiobus was\nnot previously unregistered.\nThe Seville VSC9959 switch is a platform device, so the initial set of\nconstraints that I thought would cause this (I2C or SPI buses which call\n->remove on ->shutdown) do not apply. But there is one more which\napplies here.\nIf the DSA master itself is on a bus that calls ->remove from ->shutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the seville switch driver on shutdown.\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don't use devres at all.\nThe seville driver has a code structure that could accommodate both the\nmdiobus_unregister and mdiobus_free calls, but it has an external\ndependency upon mscc_miim_setup() from mdio-mscc-miim.c, which calls\ndevm_mdiobus_alloc_size() on its behalf. So rather than restructuring\nthat, and exporting yet one more symbol mscc_miim_teardown(), let's work\nwith devres and replace of_mdiobus_register with the devres variant.\nWhen we use all-devres, we can ensure that devres doesn't free a\nstill-registered bus (it either runs both callbacks, or none)."], "name": "CVE-2022-48814", "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": "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": "2024-07-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48814\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48814\nhttps://git.kernel.org/stable/c/0e816362d823cd46c666e64d8bffe329ee22f4cc\nhttps://git.kernel.org/stable/c/1d13e7221035947c62800c9d3d99b4ed570e27e7\nhttps://git.kernel.org/stable/c/bd488afc3b39e045ba71aab472233f2a78726e7b"], "threat_severity": "Low"}

{"created": "2025-07-12T22:31:36.398235+00:00", "updated": "2025-07-12T22:31:36.398290+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}