{ "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" } } } }