{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-52629", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-06T09:52:12.092Z", "datePublished": "2024-03-29T09:13:45.848Z", "dateUpdated": "2026-05-11T19:30:40.834Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:30:40.834Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsh: push-switch: Reorder cleanup operations to avoid use-after-free bug\n\nThe original code puts flush_work() before timer_shutdown_sync()\nin switch_drv_remove(). Although we use flush_work() to stop\nthe worker, it could be rescheduled in switch_timer(). As a result,\na use-after-free bug can occur. The details are shown below:\n\n (cpu 0) | (cpu 1)\nswitch_drv_remove() |\n flush_work() |\n ... | switch_timer // timer\n | schedule_work(&psw->work)\n timer_shutdown_sync() |\n ... | switch_work_handler // worker\n kfree(psw) // free |\n | psw->state = 0 // use\n\nThis patch puts timer_shutdown_sync() before flush_work() to\nmitigate the bugs. As a result, the worker and timer will be\nstopped safely before the deallocate operations."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/sh/drivers/push-switch.c"], "versions": [{"version": "9f5e8eee5cfe1328660c71812d87c2a67bda389f", "lessThan": "610dbd8ac271aa36080aac50b928d700ee3fe4de", "status": "affected", "versionType": "git"}, {"version": "9f5e8eee5cfe1328660c71812d87c2a67bda389f", "lessThan": "246f80a0b17f8f582b2c0996db02998239057c65", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/sh/drivers/push-switch.c"], "versions": [{"version": "2.6.20", "status": "affected"}, {"version": "0", "lessThan": "2.6.20", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "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": "2.6.20", "versionEndExcluding": "6.5.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.20", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de"}, {"url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65"}], "title": "sh: push-switch: Reorder cleanup operations to avoid use-after-free bug", "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": "9f5e8eee5cfe", "status": "affected", "lessThan": "610dbd8ac271", "versionType": "custom"}, {"version": "9f5e8eee5cfe", "status": "affected", "lessThan": "246f80a0b17f", "versionType": "custom"}, {"version": "2.6.20", "status": "affected"}, {"version": "0", "status": "unaffected", "lessThan": "2.6.20", "versionType": "custom"}, {"version": "6.54", "status": "unaffected", "lessThanOrEqual": "6.6", "versionType": "custom"}, {"version": "0", "status": "unaffected", "lessThanOrEqual": "6.6", "versionType": "custom"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-04-01T17:41:22.649775Z", "id": "CVE-2023-52629", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-18T13:39:55.629Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:21.222Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65", "tags": ["x_transferred"]}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5A8752DF-35F4-4DE7-AC4E-3F753EDE78B3", "versionEndExcluding": "6.5.4", "versionStartIncluding": "2.6.20", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsh: push-switch: Reorder cleanup operations to avoid use-after-free bug\n\nThe original code puts flush_work() before timer_shutdown_sync()\nin switch_drv_remove(). Although we use flush_work() to stop\nthe worker, it could be rescheduled in switch_timer(). As a result,\na use-after-free bug can occur. The details are shown below:\n\n (cpu 0) | (cpu 1)\nswitch_drv_remove() |\n flush_work() |\n ... | switch_timer // timer\n | schedule_work(&psw->work)\n timer_shutdown_sync() |\n ... | switch_work_handler // worker\n kfree(psw) // free |\n | psw->state = 0 // use\n\nThis patch puts timer_shutdown_sync() before flush_work() to\nmitigate the bugs. As a result, the worker and timer will be\nstopped safely before the deallocate operations."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sh: push-switch: reordenar las operaciones de limpieza para evitar el error de use after free. El c\u00f3digo original coloca Flush_work() antes de timer_shutdown_sync() en switch_drv_remove(). Aunque usamos Flush_work() para detener al trabajador, podr\u00eda reprogramarse en switch_timer(). Como resultado, puede ocurrir un error de use after free. Los detalles se muestran a continuaci\u00f3n: (cpu 0) | (procesador 1) switch_drv_remove() | descarga_trabajo() | ... | switch_timer // temporizador | Schedule_work(&psw->trabajo) timer_shutdown_sync() | ... | switch_work_handler // trabajador kfree(psw) // gratis | | psw->state = 0 // uso Este parche coloca timer_shutdown_sync() antes de Flush_work() para mitigar los errores. Como resultado, el trabajador y el temporizador se detendr\u00e1n de forma segura antes de las operaciones de desasignaci\u00f3n."}], "id": "CVE-2023-52629", "lastModified": "2025-04-08T19:28:53.087", "metrics": {"cvssMetricV31": [{"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"}]}, "published": "2024-03-29T10:15:09.327", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug", "id": "2272204", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272204"}, "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-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsh: push-switch: Reorder cleanup operations to avoid use-after-free bug\nThe original code puts flush_work() before timer_shutdown_sync()\nin switch_drv_remove(). Although we use flush_work() to stop\nthe worker, it could be rescheduled in switch_timer(). As a result,\na use-after-free bug can occur. The details are shown below:\n(cpu 0) | (cpu 1)\nswitch_drv_remove() |\nflush_work() |\n... | switch_timer // timer\n| schedule_work(&psw->work)\ntimer_shutdown_sync() |\n... | switch_work_handler // worker\nkfree(psw) // free |\n| psw->state = 0 // use\nThis patch puts timer_shutdown_sync() before flush_work() to\nmitigate the bugs. As a result, the worker and timer will be\nstopped safely before the deallocate operations.", "A vulnerability was found in the push-switch driver of Linux Kernel due to improper cleanup sequence in switch_drv_remove(). Originally, flush_work() was placed before timer_shutdown_sync(), allowing the worker to potentially be rescheduled in switch_timer() and causing a use-after-free bug."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2023-52629", "package_state": [{"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52629\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52629\nhttps://lore.kernel.org/linux-cve-announce/2024032949-CVE-2023-52629-a508@gregkh/T"], "threat_severity": "Moderate"}

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