{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"MEDIUM" }, "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\nnull_blk: fix kmemleak by releasing references to fault configfs items\n\nWhen CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk\ndriver sets up fault injection support by creating the timeout_inject,\nrequeue_inject, and init_hctx_fault_inject configfs items as children\nof the top-level nullbX configfs group.\n\nHowever, when the nullbX device is removed, the references taken to\nthese fault-config configfs items are not released. As a result,\nkmemleak reports a memory leak, for example:\n\nunreferenced object 0xc00000021ff25c40 (size 32):\n comm \"mkdir\", pid 10665, jiffies 4322121578\n hex dump (first 32 bytes):\n 69 6e 69 74 5f 68 63 74 78 5f 66 61 75 6c 74 5f init_hctx_fault_\n 69 6e 6a 65 63 74 00 88 00 00 00 00 00 00 00 00 inject..........\n backtrace (crc 1a018c86):\n __kmalloc_node_track_caller_noprof+0x494/0xbd8\n kvasprintf+0x74/0xf4\n config_item_set_name+0xf0/0x104\n config_group_init_type_name+0x48/0xfc\n fault_config_init+0x48/0xf0\n 0xc0080000180559e4\n configfs_mkdir+0x304/0x814\n vfs_mkdir+0x49c/0x604\n do_mkdirat+0x314/0x3d0\n sys_mkdir+0xa0/0xd8\n system_call_exception+0x1b0/0x4f0\n system_call_vectored_common+0x15c/0x2ec\n\nFix this by explicitly releasing the references to the fault-config\nconfigfs items when dropping the reference to the top-level nullbX\nconfigfs group.", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23032" }, { "summary":"CVE-2026-23032 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-23032.json" }, { "summary":"openEuler-SA-2026-1570", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1570" }, { "summary":"CVE-2026-23032", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-23032&packageName=kernel" } ], "title":"openEuler cve CVE-2026-23032", "tracking":{ "initial_release_date":"2026-03-17T09:39:50+08:00", "revision_history":[ { "date":"2026-03-17T09:39:50+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-03-17T09:39:50+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-03-17T09:39:50+08:00", "id":"CVE-2026-23032", "version":"1.0.0", "status":"interim" } }, "product_tree":{ 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As a result,\nkmemleak reports a memory leak, for example:\n\nunreferenced object 0xc00000021ff25c40 (size 32):\n comm \"mkdir\", pid 10665, jiffies 4322121578\n hex dump (first 32 bytes):\n 69 6e 69 74 5f 68 63 74 78 5f 66 61 75 6c 74 5f init_hctx_fault_\n 69 6e 6a 65 63 74 00 88 00 00 00 00 00 00 00 00 inject..........\n backtrace (crc 1a018c86):\n __kmalloc_node_track_caller_noprof+0x494/0xbd8\n kvasprintf+0x74/0xf4\n config_item_set_name+0xf0/0x104\n config_group_init_type_name+0x48/0xfc\n fault_config_init+0x48/0xf0\n 0xc0080000180559e4\n configfs_mkdir+0x304/0x814\n vfs_mkdir+0x49c/0x604\n do_mkdirat+0x314/0x3d0\n sys_mkdir+0xa0/0xd8\n system_call_exception+0x1b0/0x4f0\n system_call_vectored_common+0x15c/0x2ec\n\nFix this by explicitly releasing the references to the fault-config\nconfigfs items when dropping the reference to the top-level nullbX\nconfigfs group.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":{ "$ref":"$.vulnerabilities[0].product_status.fixed" } }, "remediations":[ { "product_ids":{ "$ref":"$.vulnerabilities[0].product_status.fixed" }, "details":"kernel security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1570" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"MEDIUM", "baseScore":4.4, "vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":{ "$ref":"$.vulnerabilities[0].product_status.fixed" } } ], "threats":[ { "details":"Medium", "category":"impact" } ], "title":"CVE-2026-23032" } ] }