{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-52480", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.300Z", "datePublished": "2024-02-29T05:43:12.019Z", "dateUpdated": "2026-05-11T19:28:08.814Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:28:08.814Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix race condition between session lookup and expire\n\n Thread A + Thread B\n ksmbd_session_lookup | smb2_sess_setup\n sess = xa_load |\n |\n | xa_erase(&conn->sessions, sess->id);\n |\n | ksmbd_session_destroy(sess) --> kfree(sess)\n |\n // UAF! |\n sess->last_active = jiffies |\n +\n\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/connection.c", "fs/smb/server/connection.h", "fs/smb/server/mgmt/user_session.c"], "versions": [{"version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f", "status": "affected", "versionType": "git"}, {"version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "a2ca5fd3dbcc665e1169044fa0c9e3eba779202b", "status": "affected", "versionType": "git"}, {"version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "18ced78b0ebccc2d16f426143dc56ab3aad666be", "status": "affected", "versionType": "git"}, {"version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "53ff5cf89142b978b1a5ca8dc4d4425e6a09745f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/connection.c", "fs/smb/server/connection.h", "fs/smb/server/mgmt/user_session.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.145", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.57", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.7", "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": "5.15", "versionEndExcluding": "5.15.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.5.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f"}, {"url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b"}, {"url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be"}, {"url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f"}], "title": "ksmbd: fix race condition between session lookup and expire", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:19.830Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52480", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:57:23.856280Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:52.199Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:19.830Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52480", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:57:23.856280Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:19.316Z"}}], "cna": {"title": "ksmbd: fix race condition between session lookup and expire", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f", "versionType": "git"}, {"status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "a2ca5fd3dbcc665e1169044fa0c9e3eba779202b", "versionType": "git"}, {"status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "18ced78b0ebccc2d16f426143dc56ab3aad666be", "versionType": "git"}, {"status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "lessThan": "53ff5cf89142b978b1a5ca8dc4d4425e6a09745f", "versionType": "git"}], "programFiles": ["fs/smb/server/connection.c", "fs/smb/server/connection.h", "fs/smb/server/mgmt/user_session.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"status": "unaffected", "version": "0", "lessThan": "5.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.145", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.57", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.5.7", "versionType": "semver", "lessThanOrEqual": "6.5.*"}, {"status": "unaffected", "version": "6.6", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/smb/server/connection.c", "fs/smb/server/connection.h", "fs/smb/server/mgmt/user_session.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f"}, {"url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b"}, {"url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be"}, {"url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix race condition between session lookup and expire\n\n Thread A + Thread B\n ksmbd_session_lookup | smb2_sess_setup\n sess = xa_load |\n |\n | xa_erase(&conn->sessions, sess->id);\n |\n | ksmbd_session_destroy(sess) --> kfree(sess)\n |\n // UAF! |\n sess->last_active = jiffies |\n +\n\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.145", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.57", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.5.7", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6", "versionStartIncluding": "5.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:28:08.814Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52480", "state": "PUBLISHED", "dateUpdated": "2026-05-11T19:28:08.814Z", "dateReserved": "2024-02-20T12:30:33.300Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-29T05:43:12.019Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6943BD04-722B-4B0F-810D-A5086EA877BB", "versionEndExcluding": "5.15.145", "versionStartIncluding": "5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8629E5D1-351D-4D4B-8D05-E10BD4A1CFD0", "versionEndExcluding": "6.1.57", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "830A824C-F212-4FDC-ADEF-0EBEC6B2365B", "versionEndExcluding": "6.5.7", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*", "matchCriteriaId": "84267A4F-DBC2-444F-B41D-69E15E1BEC97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*", "matchCriteriaId": "FB440208-241C-4246-9A83-C1715C0DAA6C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*", "matchCriteriaId": "0DC421F1-3D5A-4BEF-BF76-4E468985D20B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:*", "matchCriteriaId": "00AB783B-BE05-40E8-9A55-6AA457D95031", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix race condition between session lookup and expire\n\n Thread A + Thread B\n ksmbd_session_lookup | smb2_sess_setup\n sess = xa_load |\n |\n | xa_erase(&conn->sessions, sess->id);\n |\n | ksmbd_session_destroy(sess) --> kfree(sess)\n |\n // UAF! |\n sess->last_active = jiffies |\n +\n\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ksmbd: corrige la condici\u00f3n de ejecuci\u00f3n entre la b\u00fasqueda de sesi\u00f3n y la caducidad del subproceso A + subproceso B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sesiones, sesi\u00f3n->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // \u00a1UAF! | sess->last_active = jiffies | + Este parche agrega rwsem para corregir la condici\u00f3n de ejecuci\u00f3n entre ksmbd_session_lookup y ksmbd_expire_session."}], "id": "CVE-2023-52480", "lastModified": "2025-01-13T17:05:39.887", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-02-29T06:15:46.017", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ksmbd: fix race condition between session lookup and expire", "id": "2267032", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267032"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nksmbd: fix race condition between session lookup and expire\nThread A + Thread B\nksmbd_session_lookup | smb2_sess_setup\nsess = xa_load |\n|\n| xa_erase(&conn->sessions, sess->id);\n|\n| ksmbd_session_destroy(sess) --> kfree(sess)\n|\n// UAF! |\nsess->last_active = jiffies |\n+\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session.", "A flaw was found in the ksmbd module in the Linux kernel. A race condition between session lookup and expire can cause a use-after-free, resulting in a denial of service."], "name": "CVE-2023-52480", "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": "2024-02-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52480\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52480\nhttps://lore.kernel.org/linux-cve-announce/2024022922-CVE-2023-52480-ff7f@gregkh/T/#u"], "statement": "The ksmbd module is not built in the kernel shipped in Red Hat Enterprise Linux, so it is not affected by this vulnerability.", "threat_severity": "Moderate"}

{}