{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-32246", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2023-05-05T10:00:07.894Z", "datePublished": "2025-08-16T13:22:09.212Z", "dateUpdated": "2025-08-16T13:22:09.212Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-08-16T13:22:09.212Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: call rcu_barrier() in ksmbd_server_exit()\n\nracy issue is triggered the bug by racing between closing a connection\nand rmmod. In ksmbd, rcu_barrier() is not called at module unload time,\nso nothing prevents ksmbd from getting unloaded while it still has RCU\ncallbacks pending. It leads to trigger unintended execution of kernel\ncode locally and use to defeat protections such as Kernel Lockdown"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ksmbd/server.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c053e389db0d892e2ff5a60ec5e533b976503795", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d4174505016a3b2996eb7ff1530dcabbf15d47b6", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5a7090ccc242ab009ee7769e9d7fad6644dbe9bd", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "eb307d09fe15844fdaebeb8cc8c9b9e925430aa5", "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/ksmbd/server.c"], "versions": [{"version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.28"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2.15"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.3.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795"}, {"url": "https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2"}, {"url": "https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6"}, {"url": "https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd"}, {"url": "https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5"}], "title": "ksmbd: call rcu_barrier() in ksmbd_server_exit()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: call rcu_barrier() in ksmbd_server_exit()\n\nracy issue is triggered the bug by racing between closing a connection\nand rmmod. In ksmbd, rcu_barrier() is not called at module unload time,\nso nothing prevents ksmbd from getting unloaded while it still has RCU\ncallbacks pending. It leads to trigger unintended execution of kernel\ncode locally and use to defeat protections such as Kernel Lockdown"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: el problema de la llamada a rcu_barrier() en ksmbd_server_exit() desencadena el error al acelerarse entre el cierre de una conexi\u00f3n y rmmod. En ksmbd, rcu_barrier() no se llama al descargar el m\u00f3dulo, por lo que nada impide que ksmbd se descargue mientras a\u00fan tenga devoluciones de llamada de RCU pendientes. Esto provoca la ejecuci\u00f3n involuntaria de c\u00f3digo del kernel localmente y se utiliza para burlar protecciones como el bloqueo del kernel."}], "id": "CVE-2023-32246", "lastModified": "2025-08-18T20:16:28.750", "metrics": {}, "published": "2025-08-16T14:15:26.393", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ksmbd: call rcu_barrier() in ksmbd_server_exit()", "id": "2388956", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2388956"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-32246", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2025-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-32246\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-32246\nhttps://lore.kernel.org/linux-cve-announce/2025081612-CVE-2023-32246-2e6d@gregkh/T"], "threat_severity": "Moderate"}