180 lines
9.2 KiB
JSON
180 lines
9.2 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-2026-64159",
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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": "2026-07-19T07:54:57.038Z",
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"datePublished": "2026-07-19T15:40:46.400Z",
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"dateUpdated": "2026-10-21T12:43:09.056Z"
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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": "2026-10-21T12:43:09.056Z"
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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\nnetfs: Fix zeropoint update where i_size > remote_i_size\n\nFix the update of the zero point[*] by netfs_release_folio() when there is\nuncommitted data in the pagecache beyond the folio being released but the\non-server EOF is in this folio (ie. i_size > remote_i_size). The update\nneeds to limit zero_point to remote_i_size, not i_size as i_size is a local\nphenomenon reflecting updates made locally to the pagecache, not stuff\nwritten to the server. remote_i_size tracks the server's i_size.\n\n[*] The zero point is the file position from which we can assume that the\n server will just return zeros, so we can avoid generating reads.\n\nNote that netfs_invalidate_folio() probably doesn't need fixing as\nzero_point should be updated by setattr after truncation or fallocate.\n\nFound with:\n\n fsx -q -N 1000000 -p 10000 -o 128000 -l 600000 \\\n /xfstest.test/junk --replay-ops=junk.fsxops\n\nusing the following as junk.fsxops:\n\n truncate 0x0 0x1bbae 0x82864\n write 0x3ef2e 0xf9c8 0x1bbae\n write 0x67e05 0xcb5a 0x4e8f6\n mapread 0x57781 0x85b6 0x7495f\n copy_range 0x5d3d 0x10329 0x54fac 0x7495f\n write 0x64710 0x1c2b 0x7495f\n mapread 0x64000 0x1000 0x7495f\n\non cifs with the default cache option.\n\nIt shows read-gaps on folio 0x64 failing with a short read (ie. it hits\nEOF) if the FMODE_READ check is commented out in netfs_perform_write():\n\n if (//(file->f_mode & FMODE_READ) ||\n netfs_is_cache_enabled(ctx)) {\n\nand no fscache. This was initially found with the generic/522 xfstest."
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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/netfs/misc.c"
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],
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"versions": [
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{
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"version": "cce6bfa6ca0e30af9927b0074c97fe6a92f28092",
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"lessThan": "f706e3889ff75877ecb3abae5ad667dbc990331e",
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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": "cce6bfa6ca0e30af9927b0074c97fe6a92f28092",
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"lessThan": "5afc2d9b86bed2e4d9e1ba467790cbc793223f98",
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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": "cce6bfa6ca0e30af9927b0074c97fe6a92f28092",
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"lessThan": "5cd5207de519ef0c085f4f559adf5eefcb4c5202",
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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": "cce6bfa6ca0e30af9927b0074c97fe6a92f28092",
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"lessThan": "4543a4d737944134a1394afe797622546fbcc98a",
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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": "e2814004138a541110d4b2dc254a8f619c2c4ce0",
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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": "6.10.8",
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"lessThan": "6.11",
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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/netfs/misc.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.12.114",
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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": "6.18.57",
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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": "7.0.11",
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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": "6.11",
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"versionEndExcluding": "6.12.114"
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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": "6.11",
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"versionEndExcluding": "6.18.57"
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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": "6.11",
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"versionEndExcluding": "7.0.11"
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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": "6.11",
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"versionEndExcluding": "7.1"
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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": "6.10.8"
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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/f706e3889ff75877ecb3abae5ad667dbc990331e"
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},
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{
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"url": "https://git.kernel.org/stable/c/5afc2d9b86bed2e4d9e1ba467790cbc793223f98"
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},
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{
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"url": "https://git.kernel.org/stable/c/5cd5207de519ef0c085f4f559adf5eefcb4c5202"
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},
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{
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"url": "https://git.kernel.org/stable/c/4543a4d737944134a1394afe797622546fbcc98a"
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}
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],
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"title": "netfs: Fix zeropoint update where i_size > remote_i_size",
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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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} |