CVE-2023-53234

{"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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "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"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T17:55:53.727Z"}}], "cna": {"title": "watchdog: Fix kmemleak in watchdog_cdev_register", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "450caf1faa0d7bbbd1da93d3ee8c5edea7bc51a8", "lessThan": "bf26b0e430ce34261f45959989edaf680b64d538", "versionType": "git"}, {"status": "affected", "version": "f4c36f1999745c2160422fe2f362deadbe3a136b", "lessThan": "8c1655600f4f2839fb844fe8c70b2b65fadc7a56", "versionType": "git"}, {"status": "affected", "version": "ca7851d46de8a8d69022c4e5feed0820483b5f46", "lessThan": "59e391b3fc507a15b7e8e9d9f4de87cae177c366", "versionType": "git"}, {"status": "affected", "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3", "versionType": "git"}, {"status": "affected", "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "23cc41c3f19c4d858c3708f1c0a06e94958e6c3b", "versionType": "git"}, {"status": "affected", "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "ac099d94e0480c937aa9172ab64074981ca1a4d3", "versionType": "git"}, {"status": "affected", "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "50808d034e199fe3ff7a9d2068a4eebeb6b4098a", "versionType": "git"}, {"status": "affected", "version": "72139dfa2464e43957d330266994740bb7be2535", "lessThan": "13721a2ac66b246f5802ba1b75ad8637e53eeecc", "versionType": "git"}, {"status": "affected", "version": "f76905ce52653e8a821963c35d9013cff19b1399", "versionType": "git"}, {"status": "affected", "version": "4.14.182", "lessThan": "4.14.308", "versionType": "semver"}, {"status": "affected", "version": "4.19.93", "lessThan": "4.19.276", "versionType": "semver"}, {"status": "affected", "version": "5.4.8", "lessThan": "5.4.235", "versionType": "semver"}, {"status": "affected", "version": "4.9.225", "lessThan": "4.10", "versionType": "semver"}], "programFiles": ["drivers/watchdog/watchdog_dev.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "semver"}, {"status": "unaffected", "version": "4.14.308", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.276", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.235", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.173", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.100", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.18", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2.5", "versionType": "semver", "lessThanOrEqual": "6.2.*"}, {"status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/watchdog/watchdog_dev.c"], "defaultStatus": "affected"}], "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"}], "x_generator": {"engine": "bippy-1.2.0"}, "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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.308", "versionStartIncluding": "4.14.182"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.276", "versionStartIncluding": "4.19.93"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.235", "versionStartIncluding": "5.4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.173", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.100", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.18", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.2.5", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.3", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.9.225"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:28:21.133Z"}}}, "cveMetadata": {"cveId": "CVE-2023-53234", "state": "PUBLISHED", "dateUpdated": "2026-05-23T15:28:21.133Z", "dateReserved": "2025-09-15T14:19:21.847Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-09-15T14:22:07.219Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/watchdog/watchdog_dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"lessThan": "5.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.308", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.276", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.235", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.173", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.100", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.18", "versionType": "semver"}, {"lessThanOrEqual": "6.2.*", "status": "unaffected", "version": "6.2.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1F06A06D-F043-4FC9-8009-F0FF564F7BE3", "versionEndExcluding": "4.10", "versionStartIncluding": "4.9.225", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7E1FBE0A-26CC-4282-B501-BD09D83D5D84", "versionEndExcluding": "4.14.308", "versionStartIncluding": "4.14.182", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5455A75D-91F0-4B25-BC8B-D3E815C7F427", "versionEndExcluding": "4.19.276", "versionStartIncluding": "4.19.93", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D7780B7C-3278-476C-AA1E-432CCA8F6041", "versionEndExcluding": "5.4.235", "versionStartIncluding": "5.4.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4D810CFB-B7C5-493C-B98A-0D5F0D8A47B6", "versionEndExcluding": "5.10.173", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D7E5BB5-018B-46B7-A2C4-1ADB75099822", "versionEndExcluding": "5.15.100", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C8D24FD5-5A98-4042-9419-39DCFCBEFFF5", "versionEndExcluding": "6.1.18", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0575B33B-A320-4E51-84CA-10C937341E02", "versionEndExcluding": "6.2.5", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2023-53234", "lastModified": "2026-06-17T06:44:35.080", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53234", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T17:55:57.957947Z", "version": "2.0.3"}}]}, "published": "2025-09-15T15:15:50.420", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13721a2ac66b246f5802ba1b75ad8637e53eeecc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/23cc41c3f19c4d858c3708f1c0a06e94958e6c3b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/50808d034e199fe3ff7a9d2068a4eebeb6b4098a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/59e391b3fc507a15b7e8e9d9f4de87cae177c366"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8c1655600f4f2839fb844fe8c70b2b65fadc7a56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac099d94e0480c937aa9172ab64074981ca1a4d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf26b0e430ce34261f45959989edaf680b64d538"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: watchdog: Fix kmemleak in watchdog_cdev_register", "id": "2395225", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395225"}, "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-2023-53234", "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": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53234\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53234\nhttps://lore.kernel.org/linux-cve-announce/2025091515-CVE-2023-53234-5a07@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-09-17T10:07:56.020222+00:00", "updated": "2025-09-17T10:07:56.020277+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}