{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47455", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:58:30.833Z", "datePublished": "2024-05-22T06:19:44.700Z", "dateUpdated": "2026-05-23T15:20:01.562Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:20:01.562Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: Fix possible memory leak in ptp_clock_register()\n\nI got memory leak as follows when doing fault injection test:\n\nunreferenced object 0xffff88800906c618 (size 8):\n comm \"i2c-idt82p33931\", pid 4421, jiffies 4294948083 (age 13.188s)\n hex dump (first 8 bytes):\n 70 74 70 30 00 00 00 00 ptp0....\n backtrace:\n [<00000000312ed458>] __kmalloc_track_caller+0x19f/0x3a0\n [<0000000079f6e2ff>] kvasprintf+0xb5/0x150\n [<0000000026aae54f>] kvasprintf_const+0x60/0x190\n [<00000000f323a5f7>] kobject_set_name_vargs+0x56/0x150\n [<000000004e35abdd>] dev_set_name+0xc0/0x100\n [<00000000f20cfe25>] ptp_clock_register+0x9f4/0xd30 [ptp]\n [<000000008bb9f0de>] idt82p33_probe.cold+0x8b6/0x1561 [ptp_idt82p33]\n\nWhen posix_clock_register() returns an error, the name allocated\nin dev_set_name() will be leaked, the put_device() should be used\nto give up the device reference, then the name will be freed in\nkobject_cleanup() and other memory will be freed in ptp_clock_release()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/ptp/ptp_clock.c" ], "versions": [ { "version": "a33121e5487b424339636b25c35d3a180eaa5f5e", "lessThan": "f1c96d8085588e1b997a96214b409ac3be20b524", "status": "affected", "versionType": "git" }, { "version": "a33121e5487b424339636b25c35d3a180eaa5f5e", "lessThan": "95c0a0c5ec8839f8f21672be786e87a100319ca8", "status": "affected", "versionType": "git" }, { "version": "a33121e5487b424339636b25c35d3a180eaa5f5e", "lessThan": "4225fea1cb28370086e17e82c0f69bec2779dca0", "status": "affected", "versionType": "git" }, { "version": "5230ef61882d2d14deb846eb6b48370694816e4c", "status": "affected", "versionType": "git" }, { "version": "6f5e3bb7879ee1eb71c6c3cbaaffbb0da6cd7d57", "status": "affected", "versionType": "git" }, { "version": "89e8fc989feaac00bf1a7f9a766289422e2f5768", "status": "affected", "versionType": "git" }, { "version": "2dece4d6d13fe179ee3a5991811712725a56e2f7", "status": "affected", "versionType": "git" }, { "version": "0393b8720128d5b39db8523e5bfbfc689f18c37c", "status": "affected", "versionType": "git" }, { "version": "bfa2e0cd3dfda64fde43c3dca3aeba298d2fe7ad", "status": "affected", "versionType": "git" }, { "version": "3.16.83", "lessThan": "3.17", "status": "affected", "versionType": "semver" }, { "version": "4.4.224", "lessThan": "4.5", "status": "affected", "versionType": "semver" }, { "version": "4.9.224", "lessThan": "4.10", "status": "affected", "versionType": "semver" }, { "version": "4.14.162", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.93", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.8", "lessThan": "5.5", "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/ptp/ptp_clock.c" ], "versions": [ { "version": "5.5", "status": "affected" }, { "version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.241", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14.15", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15", "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": "5.5", "versionEndExcluding": "5.10.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.14.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.162" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f1c96d8085588e1b997a96214b409ac3be20b524" }, { "url": "https://git.kernel.org/stable/c/95c0a0c5ec8839f8f21672be786e87a100319ca8" }, { "url": "https://git.kernel.org/stable/c/4225fea1cb28370086e17e82c0f69bec2779dca0" } ], "title": "ptp: Fix possible memory leak in ptp_clock_register()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-10T18:55:42.625337Z", "id": "CVE-2021-47455", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-10T18:55:51.518Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/95c0a0c5ec8839f8f21672be786e87a100319ca8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4225fea1cb28370086e17e82c0f69bec2779dca0", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:30:57.924Z" } } ] } }