CVE-2022-48754

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-48754", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-20T11:09:39.057Z", "datePublished": "2024-06-20T11:13:34.561Z", "dateUpdated": "2026-08-05T08:52:08.868Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:52:08.868Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphylib: fix potential use-after-free\n\nCommit bafbdd527d56 (\"phylib: Add device reset GPIO support\") added call\nto phy_device_reset(phydev) after the put_device() call in phy_detach().\n\nThe comment before the put_device() call says that the phydev might go\naway with put_device().\n\nFix potential use-after-free by calling phy_device_reset() before\nput_device()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is phy_detach(), reached via local netdev admin (ndo_stop/ifdown \u2192 phy_disconnect) or local driver teardown/phylink/SFP paths, not via remotely received packets or protocols.\nAC:L - This is a use-after-free on a code path the attacker can invoke directly; when put_device drops the final reference (the case the surrounding comment and attach refcounting were written for), phy_device_reset() reliably touches freed phydev memory with no additional chance conditions.\nPR:L - Triggering requires CAP_NET_ADMIN to bring down or otherwise detach a PHY-backed interface, which is available to an unprivileged user via user namespaces/containers that have been given such a netdev, not only full init-namespace root.\nUI:N - No separate victim action is required; the attacker who can perform the netdev/driver operation triggers the bug themselves.\nS:U - Impact stays within the local kernel/host authority; this is a standard kernel UAF privilege-escalation class issue, not a VM/sandbox/IOMMU boundary escape.\nC:H - Use-after-free of struct phy_device lets an attacker reclaim and control the object contents, enabling arbitrary kernel read primitives via the subsequent reset_gpio/reset_ctrl use.\nI:H - The same UAF enables heap spraying and corruption of the freed phy_device so that mdio_device_reset()'s gpiod/reset_control calls become arbitrary write/control-flow primitives.\nA:H - Use-after-free of a kernel device object can cause kernel oops/panic even without full exploitation, so availability impact is high."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/phy/phy_device.c"], "versions": [{"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "67d271760b037ce0806d687ee6057edc8afd4205", "status": "affected", "versionType": "git"}, {"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "f39027cbada43b33566c312e6be3db654ca3ad17", "status": "affected", "versionType": "git"}, {"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "bd024e36f68174b1793906c39ca16cee0c9295c2", "status": "affected", "versionType": "git"}, {"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "aefaccd19379d6c4620269a162bfb88ff687f289", "status": "affected", "versionType": "git"}, {"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af", "status": "affected", "versionType": "git"}, {"version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "cbda1b16687580d5beee38273f6241ae3725960c", "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/phy/phy_device.c"], "versions": [{"version": "4.16", "status": "affected"}, {"version": "0", "lessThan": "4.16", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.228", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.176", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.96", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.19", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.5", "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": "4.16", "versionEndExcluding": "4.19.228"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.4.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.10.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.15.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.16.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205"}, {"url": "https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17"}, {"url": "https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2"}, {"url": "https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289"}, {"url": "https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af"}, {"url": "https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c"}], "title": "phylib: fix potential use-after-free", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-416", "lang": "en", "description": "CWE-416 Use After Free"}]}], "affected": [{"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "bafbdd527d56", "status": "affected", "lessThan": "67d271760b03", "versionType": "custom"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": 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"5.5"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.10.96", "versionType": "custom", "lessThanOrEqual": "5.11"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.15.19", "versionType": "custom", "lessThanOrEqual": "5.16"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.16.5", "versionType": "custom", "lessThanOrEqual": "5.17"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.17"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-25T15:13:39.264Z"}}], "cna": {"title": "phylib: fix potential use-after-free", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is phy_detach(), reached via local netdev admin (ndo_stop/ifdown \u2192 phy_disconnect) or local driver teardown/phylink/SFP paths, not via remotely received packets or protocols.\nAC:L - This is a use-after-free on a code path the attacker can invoke directly; when put_device drops the final reference (the case the surrounding comment and attach refcounting were written for), phy_device_reset() reliably touches freed phydev memory with no additional chance conditions.\nPR:L - Triggering requires CAP_NET_ADMIN to bring down or otherwise detach a PHY-backed interface, which is available to an unprivileged user via user namespaces/containers that have been given such a netdev, not only full init-namespace root.\nUI:N - No separate victim action is required; the attacker who can perform the netdev/driver operation triggers the bug themselves.\nS:U - Impact stays within the local kernel/host authority; this is a standard kernel UAF privilege-escalation class issue, not a VM/sandbox/IOMMU boundary escape.\nC:H - Use-after-free of struct phy_device lets an attacker reclaim and control the object contents, enabling arbitrary kernel read primitives via the subsequent reset_gpio/reset_ctrl use.\nI:H - The same UAF enables heap spraying and corruption of the freed phy_device so that mdio_device_reset()'s gpiod/reset_control calls become arbitrary write/control-flow primitives.\nA:H - Use-after-free of a kernel device object can cause kernel oops/panic even without full exploitation, so availability impact is high."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "67d271760b037ce0806d687ee6057edc8afd4205", "versionType": "git"}, {"status": "affected", "version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "f39027cbada43b33566c312e6be3db654ca3ad17", "versionType": "git"}, {"status": "affected", "version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "bd024e36f68174b1793906c39ca16cee0c9295c2", "versionType": "git"}, {"status": "affected", "version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "aefaccd19379d6c4620269a162bfb88ff687f289", "versionType": "git"}, {"status": "affected", "version": "bafbdd527d569c8200521f2f7579f65a044271be", "lessThan": "cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af", "versionType": 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"lessThanOrEqual": "5.16.*"}, {"status": "unaffected", "version": "5.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/phy/phy_device.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205"}, {"url": "https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17"}, {"url": "https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2"}, {"url": "https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289"}, {"url": "https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af"}, {"url": "https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphylib: fix potential use-after-free\n\nCommit bafbdd527d56 (\"phylib: Add device reset GPIO support\") added call\nto phy_device_reset(phydev) after the put_device() call in phy_detach().\n\nThe comment before the put_device() call says that the phydev might go\naway with put_device().\n\nFix potential use-after-free by calling phy_device_reset() before\nput_device()."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.228", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.176", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.96", "versionStartIncluding": "4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.19", "versionStartIncluding": "4.16"}, {"criteria": 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"OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphylib: fix potential use-after-free\n\nCommit bafbdd527d56 (\"phylib: Add device reset GPIO support\") added call\nto phy_device_reset(phydev) after the put_device() call in phy_detach().\n\nThe comment before the put_device() call says that the phydev might go\naway with put_device().\n\nFix potential use-after-free by calling phy_device_reset() before\nput_device()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: phylib: corrige el posible use-after-free. Commit bafbdd527d56 (\"phylib: agregue soporte GPIO para restablecer el dispositivo\") se agreg\u00f3 una llamada a phy_device_reset(phydev) despu\u00e9s de la llamada put_device() en phy_detach( ). El comentario antes de la llamada put_device() dice que phydev podr\u00eda desaparecer con put_device(). Solucione el posible use-after-free llamando a phy_device_reset() antes de put_device()."}], "id": "CVE-2022-48754", "lastModified": "2026-08-04T10:17:19.523", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48754", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-06-25T15:12:03.815461Z", "version": "2.0.3"}}]}, "published": "2024-06-20T12:15:13.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:7001", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:7000", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.22.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:6206", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.70.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-09-03T00:00:00Z"}], "bugzilla": {"description": "kernel: phylib: fix potential use-after-free", "id": "2293304", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293304"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.6", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nphylib: fix potential use-after-free\nCommit bafbdd527d56 (\"phylib: Add device reset GPIO support\") added call\nto phy_device_reset(phydev) after the put_device() call in phy_detach().\nThe comment before the put_device() call says that the phydev might go\naway with put_device().\nFix potential use-after-free by calling phy_device_reset() before\nput_device()."], "name": "CVE-2022-48754", "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:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-06-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48754\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48754\nhttps://lore.kernel.org/linux-cve-announce/2024062006-CVE-2022-48754-4012@gregkh/T"], "threat_severity": "Low"}

{}