{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53234", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T14:19:21.847Z", "datePublished": "2025-09-15T14:22:07.219Z", "dateUpdated": "2026-05-23T15:28:21.133Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:28:21.133Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: Fix kmemleak in watchdog_cdev_register\n\nkmemleak reports memory leaks in watchdog_dev_register, as follows:\nunreferenced object 0xffff888116233000 (size 2048):\n comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n hex dump (first 32 bytes):\n 80 fa b9 05 81 88 ff ff 08 30 23 16 81 88 ff ff .........0#.....\n 08 30 23 16 81 88 ff ff 00 00 00 00 00 00 00 00 .0#.............\n backtrace:\n [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220\n [<000000006a389304>] kmalloc_trace+0x21/0x110\n [<000000008d640eea>] watchdog_dev_register+0x4e/0x780 [watchdog]\n [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog]\n [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog]\n [<000000001f730178>] 0xffffffffc10880ae\n [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0\n [<00000000b98be325>] do_init_module+0x1ca/0x5f0\n [<0000000046d08e7c>] load_module+0x6133/0x70f0\n ...\n\nunreferenced object 0xffff888105b9fa80 (size 16):\n comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n hex dump (first 16 bytes):\n 77 61 74 63 68 64 6f 67 31 00 b9 05 81 88 ff ff watchdog1.......\n backtrace:\n [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220\n [<00000000486ab89b>] __kmalloc_node_track_caller+0x44/0x1b0\n [<000000005a39aab0>] kvasprintf+0xb5/0x140\n [<0000000024806f85>] kvasprintf_const+0x55/0x180\n [<000000009276cb7f>] kobject_set_name_vargs+0x56/0x150\n [<00000000a92e820b>] dev_set_name+0xab/0xe0\n [<00000000cec812c6>] watchdog_dev_register+0x285/0x780 [watchdog]\n [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog]\n [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog]\n [<000000001f730178>] 0xffffffffc10880ae\n [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0\n [<00000000b98be325>] do_init_module+0x1ca/0x5f0\n [<0000000046d08e7c>] load_module+0x6133/0x70f0\n ...\n\nThe reason is that put_device is not be called if cdev_device_add fails\nand wdd->id != 0.\n\nwatchdog_cdev_register\n wd_data = kzalloc [1]\n err = dev_set_name [2]\n ..\n err = cdev_device_add\n if (err) {\n if (wdd->id == 0) { // wdd->id != 0\n ..\n }\n return err; // [1],[2] would be leaked\n\nTo fix it, call put_device in all wdd->id cases." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/watchdog/watchdog_dev.c" ], "versions": [ { "version": "450caf1faa0d7bbbd1da93d3ee8c5edea7bc51a8", "lessThan": "bf26b0e430ce34261f45959989edaf680b64d538", "status": "affected", "versionType": "git" }, { "version": "f4c36f1999745c2160422fe2f362deadbe3a136b", "lessThan": "8c1655600f4f2839fb844fe8c70b2b65fadc7a56", "status": "affected", "versionType": "git" }, { "version": "ca7851d46de8a8d69022c4e5feed0820483b5f46", "lessThan": "59e391b3fc507a15b7e8e9d9f4de87cae177c366", "status": "affected", "versionType": "git" }, { "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3", "status": "affected", "versionType": "git" }, { "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "23cc41c3f19c4d858c3708f1c0a06e94958e6c3b", "status": "affected", "versionType": "git" }, { "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "ac099d94e0480c937aa9172ab64074981ca1a4d3", "status": "affected", "versionType": "git" }, { "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "50808d034e199fe3ff7a9d2068a4eebeb6b4098a", "status": "affected", "versionType": "git" }, { "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "13721a2ac66b246f5802ba1b75ad8637e53eeecc", "status": "affected", "versionType": "git" }, { "version": "f76905ce52653e8a821963c35d9013cff19b1399", "status": "affected", "versionType": "git" }, { "version": "4.14.182", "lessThan": "4.14.308", "status": "affected", "versionType": "semver" }, { "version": "4.19.93", "lessThan": "4.19.276", "status": "affected", "versionType": "semver" }, { "version": "5.4.8", "lessThan": "5.4.235", "status": "affected", "versionType": "semver" }, { "version": "4.9.225", "lessThan": "4.10", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/watchdog/watchdog_dev.c" ], "versions": [ { "version": "5.5", "status": "affected" }, { "version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.308", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.276", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.235", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.100", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.18", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.5", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "4.14.182", "versionEndExcluding": "4.14.308" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.93", "versionEndExcluding": "4.19.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.8", "versionEndExcluding": "5.4.235" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.173" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15.100" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.1.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.225" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bf26b0e430ce34261f45959989edaf680b64d538" }, { "url": "https://git.kernel.org/stable/c/8c1655600f4f2839fb844fe8c70b2b65fadc7a56" }, { "url": "https://git.kernel.org/stable/c/59e391b3fc507a15b7e8e9d9f4de87cae177c366" }, { "url": "https://git.kernel.org/stable/c/c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3" }, { "url": "https://git.kernel.org/stable/c/23cc41c3f19c4d858c3708f1c0a06e94958e6c3b" }, { "url": "https://git.kernel.org/stable/c/ac099d94e0480c937aa9172ab64074981ca1a4d3" }, { "url": "https://git.kernel.org/stable/c/50808d034e199fe3ff7a9d2068a4eebeb6b4098a" }, { "url": "https://git.kernel.org/stable/c/13721a2ac66b246f5802ba1b75ad8637e53eeecc" } ], "title": "watchdog: Fix kmemleak in watchdog_cdev_register", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53234", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T17:55:57.957947Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-401", "description": "CWE-401 Missing Release of Memory after Effective Lifetime" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:02:49.667Z" } } ] } }