{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: release layout stid on setlease failure\n\nnfs4_alloc_stid() publishes the new stid into cl->cl_stateids via\nidr_alloc_cyclic() under cl_lock before returning to\nnfsd4_alloc_layout_stateid(). When nfsd4_layout_setlease() then\nfails, the error path frees the layout stateid directly with\nkmem_cache_free() without ever calling idr_remove(), leaving the\nIDR slot pointing at freed slab memory. Any subsequent IDR walker\n(states_show, client teardown) dereferences the dangling pointer.\n\nThe correct teardown for an IDR-published stid is nfs4_put_stid(),\nwhich removes the IDR slot under cl_lock, dispatches sc_free\n(nfsd4_free_layout_stateid) to release ls->ls_file via\nnfsd4_close_layout(), and drops the nfs4_file reference in its\ntail.\n\nA second issue blocks that switch: nfsd4_free_layout_stateid()\nunconditionally inspects ls->ls_fence_work via\ndelayed_work_pending() under ls_lock, but\nINIT_DELAYED_WORK(&ls->ls_fence_work, ...) currently runs only\nafter the setlease call. On the setlease-failure path the\ndestructor would touch an uninitialized delayed_work.\n\n nfsd4_alloc_layout_stateid()\n nfs4_alloc_stid() /* idr_alloc_cyclic under cl_lock */\n nfsd4_layout_setlease() /* fails */\n nfs4_put_stid()\n nfsd4_free_layout_stateid()\n delayed_work_pending(&ls->ls_fence_work) /* needs INIT */\n nfsd4_close_layout() /* nfsd_file_put(ls->ls_file) */\n put_nfs4_file()\n\nFix by hoisting the ls_fenced / ls_fence_delay / INIT_DELAYED_WORK\ninitialization above the nfsd4_layout_setlease() call, and replace\nthe manual nfsd_file_put + put_nfs4_file + kmem_cache_free cleanup\nwith a single nfs4_put_stid(stp).", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53399" }, { "summary":"CVE-2026-53399 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-53399.json" }, { "summary":"openEuler-SA-2026-3317", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3317" }, { "summary":"CVE-2026-53399", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-53399&packageName=kernel" } ], "title":"openEuler cve CVE-2026-53399", "tracking":{ "initial_release_date":"2026-08-19T11:07:48+08:00", "revision_history":[ { "date":"2026-08-19T11:07:48+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-08-19T11:07:48+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-08-19T11:07:48+08:00", "id":"CVE-2026-53399", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:22.03-LTS-SP4" }, "product_id":"openEuler-22.03-LTS-SP4", 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When nfsd4_layout_setlease() then\nfails, the error path frees the layout stateid directly with\nkmem_cache_free() without ever calling idr_remove(), leaving the\nIDR slot pointing at freed slab memory. Any subsequent IDR walker\n(states_show, client teardown) dereferences the dangling pointer.\n\nThe correct teardown for an IDR-published stid is nfs4_put_stid(),\nwhich removes the IDR slot under cl_lock, dispatches sc_free\n(nfsd4_free_layout_stateid) to release ls->ls_file via\nnfsd4_close_layout(), and drops the nfs4_file reference in its\ntail.\n\nA second issue blocks that switch: nfsd4_free_layout_stateid()\nunconditionally inspects ls->ls_fence_work via\ndelayed_work_pending() under ls_lock, but\nINIT_DELAYED_WORK(&ls->ls_fence_work, ...) currently runs only\nafter the setlease call. On the setlease-failure path the\ndestructor would touch an uninitialized delayed_work.\n\n nfsd4_alloc_layout_stateid()\n nfs4_alloc_stid() /* idr_alloc_cyclic under cl_lock */\n nfsd4_layout_setlease() /* fails */\n nfs4_put_stid()\n nfsd4_free_layout_stateid()\n delayed_work_pending(&ls->ls_fence_work) /* needs INIT */\n nfsd4_close_layout() /* nfsd_file_put(ls->ls_file) */\n put_nfs4_file()\n\nFix by hoisting the ls_fenced / ls_fence_delay / INIT_DELAYED_WORK\ninitialization above the nfsd4_layout_setlease() call, and replace\nthe manual nfsd_file_put + put_nfs4_file + kmem_cache_free cleanup\nwith a single nfs4_put_stid(stp).", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-22.03-LTS-SP4:bpftool-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:bpftool-debuginfo-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-5.10.0-328.0.0.229.oe2203sp4.x86_64", 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"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3317" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"CRITICAL", "baseScore":9.8, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-22.03-LTS-SP4:bpftool-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:bpftool-debuginfo-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-debuginfo-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-debugsource-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-devel-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-headers-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-source-5.10.0-328.0.0.229.oe2203sp4.x86_64", "openEuler-22.03-LTS-SP4:kernel-tools-5.10.0-328.0.0.229.oe2203sp4.x86_64", 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