196 lines
10 KiB
JSON
196 lines
10 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-2026-98682",
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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": "2026-09-25T10:25:14.364Z",
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"datePublished": "2026-10-18T15:45:47.375Z",
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"dateUpdated": "2026-11-10T18:15:15.197Z"
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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": "2026-11-10T18:15:15.197Z"
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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\nsmb: client: drain and invalidate before server-side copy/clone\n\ncifs_file_copychunk_range() and the clone (FICLONE) path of\ncifs_remap_file_range() do not serialise the destination page cache\nagainst the server-side copy the way the other server-side range\noperations (smb3_zero_range(), smb3_punch_hole(), smb3_collapse_range()\nand smb3_insert_range()) do.\n\ncifs_file_copychunk_range() invalidates the destination range with\nfilemap_invalidate_inode(), which takes and drops the mapping's\ninvalidate_lock internally, so the lock is no longer held when the\ncopychunk ioctl is issued. It also never drains in-flight netfs I/O on\nthe target. The clone path never takes the invalidate_lock at all (only\ni_rwsem), uses a bare truncate_inode_pages_range() and likewise does not\ndrain outstanding I/O.\n\nAs a result an asynchronous destination writeback can complete after the\nserver-side copy/clone has run and reinstate stale data over the region\njust written by the server, corrupting the file. This is the same class\nof corruption as commit d7d2adcd022b (\"smb/client: flush dirty data\nbefore punching a hole\") and has been seen randomly in generic/363\nagainst Windows Server.\n\nFix both paths to follow the established ordering: hold the target\nmapping's invalidate_lock across the flush and invalidation of the\ndestination and the server ioctl, and call netfs_wait_for_outstanding_io()\non the target to drain in-flight writes before the ioctl is issued. Only\nthe target inode's invalidate_lock is required, as the source is merely\nflushed and not invalidated; i_rwsem (already held via\nlock_two_nondirectories()) is acquired before the invalidate_lock,\nmatching the VFS lock ordering. Since filemap_invalidate_inode() takes\nthat same lock internally, replace it with its own unmap/flush/invalidate\nsteps instead of calling it, and return early on a zero-length copy to\navoid a range underflow."
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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/smb/client/cifsfs.c"
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],
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"versions": [
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{
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"version": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
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"lessThan": "6e7a06704457594f06e4ea58a17a5d162ccc735c",
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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": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
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"lessThan": "e97dac26ed2cce04f9d159cc99e1eca828c5d49e",
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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": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
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"lessThan": "dc71660f11ef2fecc0695a41e49cd496a9d255ab",
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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": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
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"lessThan": "c9b1194e8ec99d95db25db45edd2fbf690f043ab",
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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": "358bd5f436d820bb758833050aae065b35d6986c",
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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": "43801359c8971cc49b4a4db5015fba77fbd09c32",
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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": "6.1.68",
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"lessThan": "6.2",
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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": "6.6.7",
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"lessThan": "6.7",
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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/smb/client/cifsfs.c"
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],
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"versions": [
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{
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"version": "6.7",
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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": "6.7",
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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": "6.12.117",
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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": "6.18.61",
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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": "7.2.10",
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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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{
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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": "6.7",
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"versionEndExcluding": "6.12.117"
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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": "6.7",
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"versionEndExcluding": "6.18.61"
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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": "6.7",
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"versionEndExcluding": "7.2.10"
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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": "6.7",
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"versionEndExcluding": "7.3"
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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": "6.1.68"
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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": "6.6.7"
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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/6e7a06704457594f06e4ea58a17a5d162ccc735c"
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},
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{
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"url": "https://git.kernel.org/stable/c/e97dac26ed2cce04f9d159cc99e1eca828c5d49e"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc71660f11ef2fecc0695a41e49cd496a9d255ab"
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},
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{
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"url": "https://git.kernel.org/stable/c/c9b1194e8ec99d95db25db45edd2fbf690f043ab"
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}
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],
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"title": "smb: client: drain and invalidate before server-side copy/clone",
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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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} |