138 lines
7.0 KiB
JSON
138 lines
7.0 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-2025-68212",
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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": "2025-12-16T13:41:40.256Z",
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"datePublished": "2025-12-16T13:57:08.327Z",
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"dateUpdated": "2026-08-05T12:10:14.921Z"
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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": "2026-08-05T12:10:14.921Z"
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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\nfs: Fix uninitialized 'offp' in statmount_string()\n\nIn statmount_string(), most flags assign an output offset pointer (offp)\nwhich is later updated with the string offset. However, the\nSTATMOUNT_MNT_UIDMAP and STATMOUNT_MNT_GIDMAP cases directly set the\nstruct fields instead of using offp. This leaves offp uninitialized,\nleading to a possible uninitialized dereference when *offp is updated.\n\nFix it by assigning offp for UIDMAP and GIDMAP as well, keeping the code\npath consistent."
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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 vulnerability is reached through the local statmount() syscall by requesting UID or GID mappings for an idmapped mount.\nAC:L - No race or uncontrollable condition is required; an attacker can reliably issue the request against a visible idmapped mount with a resolvable mapping.\nPR:L - No capability is required for a mount reachable beneath the caller's root, and an unprivileged user can access or create suitable idmapped mounts through user namespaces.\nUI:N - Exploitation requires only attacker-controlled syscalls and no action by another user.\nS:U - The corruption affects the host kernel within the same operating-system security authority, so ordinary privilege escalation does not change scope.\nC:H - The uninitialized write can partially corrupt seq.buf before it is used as a copy_to_user() source, creating a plausible kernel-memory disclosure primitive.\nI:H - The four-byte kernel write corrupts live pointers such as root.mnt or seq.buf, which are subsequently passed to mntput() or kvfree(), enabling further memory corruption and potential code execution.\nA:H - The malformed pointer is subsequently dereferenced or freed, producing a repeatable kernel oops and potentially a system-wide panic."
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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/namespace.c"
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],
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"versions": [
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{
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"version": "37c4a9590e1efcae7749682239fc22a330d2d325",
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"lessThan": "acfde9400e611c8d2668f1c70053c4a1d6ecfc36",
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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": "37c4a9590e1efcae7749682239fc22a330d2d325",
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"lessThan": "0778ac7df5137d5041783fadfc201f8fd55a1d9b",
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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/namespace.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.17.10",
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"lessThanOrEqual": "6.17.*",
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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",
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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": "6.15",
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"versionEndExcluding": "6.17.10"
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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": "6.15",
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"versionEndExcluding": "6.18"
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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/acfde9400e611c8d2668f1c70053c4a1d6ecfc36"
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},
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{
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"url": "https://git.kernel.org/stable/c/0778ac7df5137d5041783fadfc201f8fd55a1d9b"
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}
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],
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"title": "fs: Fix uninitialized 'offp' in statmount_string()",
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"x_generator": {
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