246 lines
13 KiB
JSON
246 lines
13 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-2026-46129",
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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": "2026-05-13T15:03:33.099Z",
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"datePublished": "2026-05-28T09:35:44.271Z",
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"dateUpdated": "2026-08-05T12:29:55.996Z"
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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": "2026-08-05T12:29:55.996Z"
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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\nbtrfs: fix double free in create_space_info() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info()\n-> btrfs_sysfs_add_space_info_type()\n-> kobject_init_and_add()\n-> failure\n-> kobject_put(&space_info->kobj)\n-> space_info_release()\n-> kfree(space_info)\n\nThen control returns to create_space_info():\n\nbtrfs_sysfs_add_space_info_type() returns error\n-> goto out_free\n-> kfree(space_info)\n\nThis causes a double free.\n\nKeep the direct kfree(space_info) for the earlier failure path, but\nafter btrfs_sysfs_add_space_info_type() has called kobject_put(), let\nthe kobject release callback handle the cleanup."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable code is reachable only during a btrfs mount (btrfs_fill_super → open_ctree → btrfs_init_space_info → create_space_info); it requires presenting a device/image and initiating a mount locally, with no network path.\nAC:L - The failure point is kobject_init_and_add() returning an allocation error; per guidance memory pressure is attacker-influenceable, and an attacker can repeatedly retry mounts under induced pressure to hit it.\nPR:L - On typical desktops/kiosks an unprivileged user can mount attacker-supplied removable media or loop images via udisks2/autofs, so no real root in the init namespace is strictly required to initiate the triggering mount.\nUI:N - The attacker performs the mount of their own crafted image themselves, so no separate victim action is required.\nS:U - The double free corrupts kernel heap state within the kernel's own security authority with no crossing into another security domain (no VM/IOMMU boundary).\nC:H - A double free is memory corruption that can be leveraged via reallocation of the freed slot into an attacker-controlled object, enabling kernel memory disclosure.\nI:H - Double-free corruption of the heap allocator can be groomed into a write primitive / control-flow hijack, so integrity impact is High.\nA:H - A double free reliably corrupts allocator metadata and causes kernel oops/panic, yielding a High availability impact."
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}
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]
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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/btrfs/space-info.c"
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],
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"versions": [
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{
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"version": "20e8f2de3688082eeafeb93c8900485b7542457e",
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"lessThan": "ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5",
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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": "58208907c4044a764dbd8896026283905da6d9be",
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"lessThan": "c2670ec4aa49ca226bce9776601e0da37502be07",
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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": "bb4fa4c0b54aae25e55faeda7f78d0c11b8cd618",
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"lessThan": "f414b3abbba59ef379a2b3c31f2bdd9358ed5e53",
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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": "6cb008f1bb23e023dfe615cca5df14570dfc8da5",
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"lessThan": "9a060970fd7b5e1c561e4ce73cb9949e4269a738",
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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": "a11224a016d6d1d46a4d9b6573244448a80d4d7f",
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"lessThan": "dd6ade0fdd59218d71a981ae7c937a304e49209c",
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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": "a11224a016d6d1d46a4d9b6573244448a80d4d7f",
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"lessThan": "3f487be81292702a59ea9dbc4088b3360a50e837",
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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": "6.1.162",
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"lessThan": "6.1.175",
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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": "6.6.122",
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"lessThan": "6.6.140",
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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": "6.12.67",
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"lessThan": "6.12.88",
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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": "6.18.7",
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"lessThan": "6.18.30",
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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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"fs/btrfs/space-info.c"
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],
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"versions": [
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{
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"version": "6.19",
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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": "6.19",
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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": "6.1.175",
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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": "6.6.140",
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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": "6.12.88",
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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": "6.18.30",
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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": "7.0.7",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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{
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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": "6.1.162",
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"versionEndExcluding": "6.1.175"
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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": "6.6.122",
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"versionEndExcluding": "6.6.140"
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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": "6.12.67",
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"versionEndExcluding": "6.12.88"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18.7",
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"versionEndExcluding": "6.18.30"
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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": "6.19",
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"versionEndExcluding": "7.0.7"
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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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}
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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/ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5"
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},
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{
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"url": "https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07"
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},
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{
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"url": "https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53"
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},
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{
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"url": "https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c"
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},
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{
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"url": "https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837"
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}
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],
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"title": "btrfs: fix double free in create_space_info() error path",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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} |