206 lines
11 KiB
JSON
206 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-50751",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-24T13:02:21.544Z",
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"datePublished": "2025-12-24T13:05:46.159Z",
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"dateUpdated": "2026-05-11T19:24:49.023Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T19:24:49.023Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nconfigfs: fix possible memory leak in configfs_create_dir()\n\nkmemleak reported memory leaks in configfs_create_dir():\n\nunreferenced object 0xffff888009f6af00 (size 192):\n comm \"modprobe\", pid 3777, jiffies 4295537735 (age 233.784s)\n backtrace:\n kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)\n new_fragment (./include/linux/slab.h:600 fs/configfs/dir.c:163)\n configfs_register_subsystem (fs/configfs/dir.c:1857)\n basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic\n do_one_initcall (init/main.c:1296)\n do_init_module (kernel/module/main.c:2455)\n ...\n\nunreferenced object 0xffff888003ba7180 (size 96):\n comm \"modprobe\", pid 3777, jiffies 4295537735 (age 233.784s)\n backtrace:\n kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)\n configfs_new_dirent (./include/linux/slab.h:723 fs/configfs/dir.c:194)\n configfs_make_dirent (fs/configfs/dir.c:248)\n configfs_create_dir (fs/configfs/dir.c:296)\n configfs_attach_group.isra.28 (fs/configfs/dir.c:816 fs/configfs/dir.c:852)\n configfs_register_subsystem (fs/configfs/dir.c:1881)\n basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic\n do_one_initcall (init/main.c:1296)\n do_init_module (kernel/module/main.c:2455)\n ...\n\nThis is because the refcount is not correct in configfs_make_dirent().\nFor normal stage, the refcount is changing as:\n\nconfigfs_register_subsystem()\n configfs_create_dir()\n configfs_make_dirent()\n configfs_new_dirent() # set s_count = 1\n dentry->d_fsdata = configfs_get(sd); # s_count = 2\n...\nconfigfs_unregister_subsystem()\n configfs_remove_dir()\n remove_dir()\n configfs_remove_dirent() # s_count = 1\n dput() ...\n *dentry_unlink_inode()*\n configfs_d_iput() # s_count = 0, release\n\nHowever, if we failed in configfs_create():\n\nconfigfs_register_subsystem()\n configfs_create_dir()\n configfs_make_dirent() # s_count = 2\n ...\n configfs_create() # fail\n ->out_remove:\n configfs_remove_dirent(dentry)\n configfs_put(sd) # s_count = 1\n return PTR_ERR(inode);\n\nThere is no inode in the error path, so the configfs_d_iput() is lost\nand makes sd and fragment memory leaked.\n\nTo fix this, when we failed in configfs_create(), manually call\nconfigfs_put(sd) to keep the refcount correct."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/configfs/dir.c"
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],
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"versions": [
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "90c38f57a821499391526b15cc944c265bd24e48",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "74ac7c9ee2d486c501e7864c903f5098fc477acd",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "07f82dca112262b169bec0001378126439cab776",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "8bc77754224a2c8581727ffe2e958119b4e27c8f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "c72eb6e6e49a71f7598740786568fafdd013a227",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "c65234b283a65cfbfc94619655e820a5e55199eb",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/configfs/dir.c"
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],
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"versions": [
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{
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"version": "2.6.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.229",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.163",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.86",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.0.16",
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"lessThanOrEqual": "6.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.2",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "5.4.229"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "5.10.163"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "5.15.86"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "6.0.16"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "6.1.2"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.16",
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"versionEndExcluding": "6.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/90c38f57a821499391526b15cc944c265bd24e48"
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},
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{
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"url": "https://git.kernel.org/stable/c/74ac7c9ee2d486c501e7864c903f5098fc477acd"
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},
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{
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"url": "https://git.kernel.org/stable/c/07f82dca112262b169bec0001378126439cab776"
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},
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{
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"url": "https://git.kernel.org/stable/c/8bc77754224a2c8581727ffe2e958119b4e27c8f"
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},
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{
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"url": "https://git.kernel.org/stable/c/c72eb6e6e49a71f7598740786568fafdd013a227"
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},
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{
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"url": "https://git.kernel.org/stable/c/c65234b283a65cfbfc94619655e820a5e55199eb"
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}
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],
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"title": "configfs: fix possible memory leak in configfs_create_dir()",
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} |