122 lines
6.0 KiB
JSON
122 lines
6.0 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-2026-80869",
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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": "2026-08-26T14:34:25.798Z",
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"datePublished": "2026-09-04T16:48:27.068Z",
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"dateUpdated": "2026-09-04T16:48:27.068Z"
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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": "2026-09-04T16:48:27.068Z"
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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\nntfs: bound the attribute-list entry in ntfs_read_inode_mount()\n\nThe $MFT attribute-list walk in ntfs_read_inode_mount() validates each\nentry only with \"(u8 *)al_entry + 6 > al_end\" and\n\"(u8 *)al_entry + le16_to_cpu(al_entry->length) > al_end\", but then reads\nal_entry->lowest_vcn (an __le64 at offset 8) and al_entry->mft_reference\n(offset 16) -- fields beyond the 6 bytes proven in range. al_entry->length\nis attacker-controlled and only required non-zero, so a short entry (e.g.\nlength 8) placed at the tail passes both checks while the lowest_vcn /\nmft_reference reads fall past al_end.\n\nal_end is ni->attr_list + attr_list_size (the on-disk size); the buffer is\nkvzalloc(round_up(attr_list_size, SECTOR_SIZE)), so the sector rounding\nusually absorbs the over-read -- but when attr_list_size is a multiple of\nSECTOR_SIZE there is no slack and a crafted $MFT attribute list produces an\nout-of-bounds read at mount time.\n\nValidate the entry with ntfs_attr_list_entry_is_valid() (added in patch\n1/3) before dereferencing it, matching the bound the other attribute-list\nwalks now use. The validator already requires the length to cover the fixed\nheader, which makes the separate \"!al_entry->length\" check redundant, so\ndrop it too."
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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/ntfs/inode.c"
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],
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"versions": [
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{
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"version": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
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"lessThan": "c7a7e48e71ce915ec4cbd6e9f355590c1ecbc29a",
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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": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
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"lessThan": "98634df5b1cb56c26299b7409227025ddb0167d8",
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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/ntfs/inode.c"
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],
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"versions": [
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{
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"version": "7.1",
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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": "7.1",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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{
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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": "7.1",
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"versionEndExcluding": "7.1.5"
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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": "7.1",
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"versionEndExcluding": "7.2"
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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/c7a7e48e71ce915ec4cbd6e9f355590c1ecbc29a"
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},
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{
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"url": "https://git.kernel.org/stable/c/98634df5b1cb56c26299b7409227025ddb0167d8"
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}
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],
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"title": "ntfs: bound the attribute-list entry in ntfs_read_inode_mount()",
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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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}
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} |