245 lines
12 KiB
JSON
245 lines
12 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-2026-89983",
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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": "2026-09-11T19:38:34.779Z",
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"datePublished": "2026-09-16T10:32:59.461Z",
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"dateUpdated": "2026-10-19T08:55:57.766Z"
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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": "2026-10-19T08:55:57.766Z"
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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\ni2c: core: fix debugfs UAF on adapter removal\n\ni2c_del_adapter() frees the adapter's debugfs directory before it\nunregisters the adapter device, but the new_device sysfs attribute\nstays writable until device_del(). A write racing with removal still\nreaches i2c_device_probe(), which passes the freed adap->debugfs to\ndebugfs_create_dir() as the new client's parent:\n\n BUG: KASAN: slab-use-after-free in lookup_noperm_common+0x407/0x430\n Read of size 4 at addr ffff88803ef87810 by task syz.0.61/6090\n lookup_noperm_common+0x407/0x430\n simple_start_creating+0x9c/0x110\n debugfs_start_creating+0xdb/0x1a0\n debugfs_create_dir+0x24/0x350\n i2c_device_probe+0x814/0xbf0\n\nIt's technically possible to create a client after i2c_deregister_clients\nhas run. That client will never be unregistered and make\nwait_for_completion hang.\n\nClose the window by removing the new_device attribute at the start of\ni2c_del_adapter(). device_remove_file() will drain any clients left."
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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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"drivers/i2c/i2c-core-base.c"
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],
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"versions": [
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{
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"version": "0e8926abfd7aee220e44be5566affd7a8580b50e",
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"lessThan": "dc33a9762538b3250ed6b5644a4d44c748be33a6",
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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": "e2a268b0f512fb18ae5961b1fdfaf610ed6bd661",
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"lessThan": "1f1bcd4eca6caa3e4258d9a31925112539406eb6",
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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": "4a2be5a72865bdd219b2d8c327b9fa03e87a4a9e",
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"lessThan": "f9094ace03e0a532cc6505d2e97b61ae738da4ed",
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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": "73febd775bdbdb98c81255ff85773ac410ded5c4",
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"lessThan": "643fb872aa04342d27dbef52b2b3cf3fe71b2c7b",
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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": "73febd775bdbdb98c81255ff85773ac410ded5c4",
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"lessThan": "112b3d48084c820bbccf41d9783fd122e3ac4cb0",
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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": "73febd775bdbdb98c81255ff85773ac410ded5c4",
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"lessThan": "552836be2d95c688eede6371f85532abe1a71232",
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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": "73febd775bdbdb98c81255ff85773ac410ded5c4",
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"lessThan": "b15b548d52b43ba8ac4652bc2c7244a8dd1e9622",
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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": "5.15.168",
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"lessThan": "5.15.221",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.113",
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"lessThan": "6.1.188",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.55",
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"lessThan": "6.6.157",
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"status": "affected",
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"versionType": "semver"
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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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"drivers/i2c/i2c-core-base.c"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "5.15.221",
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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": "6.1.188",
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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": "6.6.157",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.110",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.51",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.5",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "5.15.168",
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"versionEndExcluding": "5.15.221"
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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": "6.1.113",
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"versionEndExcluding": "6.1.188"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6.55",
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"versionStartIncluding": "6.8",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.8",
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"versionEndExcluding": "6.18.51"
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},
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"versionEndExcluding": "7.2.5"
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"versionStartIncluding": "6.8",
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"versionEndExcluding": "7.3"
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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/dc33a9762538b3250ed6b5644a4d44c748be33a6"
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},
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{
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"url": "https://git.kernel.org/stable/c/1f1bcd4eca6caa3e4258d9a31925112539406eb6"
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},
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{
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"url": "https://git.kernel.org/stable/c/f9094ace03e0a532cc6505d2e97b61ae738da4ed"
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},
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{
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"url": "https://git.kernel.org/stable/c/643fb872aa04342d27dbef52b2b3cf3fe71b2c7b"
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},
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{
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"url": "https://git.kernel.org/stable/c/112b3d48084c820bbccf41d9783fd122e3ac4cb0"
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},
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{
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"url": "https://git.kernel.org/stable/c/552836be2d95c688eede6371f85532abe1a71232"
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},
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{
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"url": "https://git.kernel.org/stable/c/b15b548d52b43ba8ac4652bc2c7244a8dd1e9622"
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}
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],
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"title": "i2c: core: fix debugfs UAF on adapter removal",
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