{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-50578", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-22T13:20:23.761Z", "datePublished": "2025-10-22T13:23:31.565Z", "dateUpdated": "2026-05-11T19:22:08.143Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:22:08.143Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclass: fix possible memory leak in __class_register()\n\nIf class_add_groups() returns error, the 'cp->subsys' need be\nunregister, and the 'cp' need be freed.\n\nWe can not call kset_unregister() here, because the 'cls' will\nbe freed in callback function class_release() and it's also\nfreed in caller's error path, it will cause double free.\n\nSo fix this by calling kobject_del() and kfree_const(name) to\ncleanup kobject. Besides, call kfree() to free the 'cp'.\n\nFault injection test can trigger this:\n\nunreferenced object 0xffff888102fa8190 (size 8):\n comm \"modprobe\", pid 502, jiffies 4294906074 (age 49.296s)\n hex dump (first 8 bytes):\n 70 6b 74 63 64 76 64 00 pktcdvd.\n backtrace:\n [<00000000e7c7703d>] __kmalloc_track_caller+0x1ae/0x320\n [<000000005e4d70bc>] kstrdup+0x3a/0x70\n [<00000000c2e5e85a>] kstrdup_const+0x68/0x80\n [<000000000049a8c7>] kvasprintf_const+0x10b/0x190\n [<0000000029123163>] kobject_set_name_vargs+0x56/0x150\n [<00000000747219c9>] kobject_set_name+0xab/0xe0\n [<0000000005f1ea4e>] __class_register+0x15c/0x49a\n\nunreferenced object 0xffff888037274000 (size 1024):\n comm \"modprobe\", pid 502, jiffies 4294906074 (age 49.296s)\n hex dump (first 32 bytes):\n 00 40 27 37 80 88 ff ff 00 40 27 37 80 88 ff ff .@'7.....@'7....\n 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........\n backtrace:\n [<00000000151f9600>] kmem_cache_alloc_trace+0x17c/0x2f0\n [<00000000ecf3dd95>] __class_register+0x86/0x49a"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/base/class.c"], "versions": [{"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "4efa5443817c1b6de22d401aeca5b2481e835f8c", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "3bb9c92c27624ad076419a70f2b1a30cd1f8bbbd", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "3e0efc3f3f5e5c73996782f8db69963e501bb878", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "18a7200646958cf8e1b8a933de08122fc50676cd", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "417ef049e3fd3b0d2593c1d5ffa3d0d5d0a018a7", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "e764ad5918a099ebeb909ccff83893a714e497e1", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "abaedb68a769e6bf36836b55a2f49b531c5f3f7b", "status": "affected", "versionType": "git"}, {"version": "ced6473e7486702f530a49f886b73195e4977734", "lessThan": "8c3e8a6bdb5253b97ad532570f8b5db5f7a06407", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/base/class.c"], "versions": [{"version": "4.10", "status": "affected"}, {"version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "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": "4.10", "versionEndExcluding": "4.14.303"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "4.19.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.4.229"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.163"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.0.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4efa5443817c1b6de22d401aeca5b2481e835f8c"}, {"url": "https://git.kernel.org/stable/c/3bb9c92c27624ad076419a70f2b1a30cd1f8bbbd"}, {"url": "https://git.kernel.org/stable/c/3e0efc3f3f5e5c73996782f8db69963e501bb878"}, {"url": "https://git.kernel.org/stable/c/18a7200646958cf8e1b8a933de08122fc50676cd"}, {"url": "https://git.kernel.org/stable/c/417ef049e3fd3b0d2593c1d5ffa3d0d5d0a018a7"}, {"url": "https://git.kernel.org/stable/c/e764ad5918a099ebeb909ccff83893a714e497e1"}, {"url": "https://git.kernel.org/stable/c/abaedb68a769e6bf36836b55a2f49b531c5f3f7b"}, {"url": "https://git.kernel.org/stable/c/8c3e8a6bdb5253b97ad532570f8b5db5f7a06407"}], "title": "class: fix possible memory leak in __class_register()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclass: fix possible memory leak in __class_register()\n\nIf class_add_groups() returns error, the 'cp->subsys' need be\nunregister, and the 'cp' need be freed.\n\nWe can not call kset_unregister() here, because the 'cls' will\nbe freed in callback function class_release() and it's also\nfreed in caller's error path, it will cause double free.\n\nSo fix this by calling kobject_del() and kfree_const(name) to\ncleanup kobject. Besides, call kfree() to free the 'cp'.\n\nFault injection test can trigger this:\n\nunreferenced object 0xffff888102fa8190 (size 8):\n comm \"modprobe\", pid 502, jiffies 4294906074 (age 49.296s)\n hex dump (first 8 bytes):\n 70 6b 74 63 64 76 64 00 pktcdvd.\n backtrace:\n [<00000000e7c7703d>] __kmalloc_track_caller+0x1ae/0x320\n [<000000005e4d70bc>] kstrdup+0x3a/0x70\n [<00000000c2e5e85a>] kstrdup_const+0x68/0x80\n [<000000000049a8c7>] kvasprintf_const+0x10b/0x190\n [<0000000029123163>] kobject_set_name_vargs+0x56/0x150\n [<00000000747219c9>] kobject_set_name+0xab/0xe0\n [<0000000005f1ea4e>] __class_register+0x15c/0x49a\n\nunreferenced object 0xffff888037274000 (size 1024):\n comm \"modprobe\", pid 502, jiffies 4294906074 (age 49.296s)\n hex dump (first 32 bytes):\n 00 40 27 37 80 88 ff ff 00 40 27 37 80 88 ff ff .@'7.....@'7....\n 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........\n backtrace:\n [<00000000151f9600>] kmem_cache_alloc_trace+0x17c/0x2f0\n [<00000000ecf3dd95>] __class_register+0x86/0x49a"}], "id": "CVE-2022-50578", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-22T14:15:42.803", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18a7200646958cf8e1b8a933de08122fc50676cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3bb9c92c27624ad076419a70f2b1a30cd1f8bbbd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e0efc3f3f5e5c73996782f8db69963e501bb878"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/417ef049e3fd3b0d2593c1d5ffa3d0d5d0a018a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4efa5443817c1b6de22d401aeca5b2481e835f8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c3e8a6bdb5253b97ad532570f8b5db5f7a06407"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/abaedb68a769e6bf36836b55a2f49b531c5f3f7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e764ad5918a099ebeb909ccff83893a714e497e1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: class: fix possible memory leak in __class_register()", "id": "2405724", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405724"}, "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-2022-50578", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2025-10-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50578\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50578\nhttps://lore.kernel.org/linux-cve-announce/2025102209-CVE-2022-50578-eb90@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-23T10:07:25.409376+00:00", "updated": "2025-10-23T10:07:25.409401+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}