206 lines
10 KiB
JSON
206 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-2026-53017",
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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": "2026-06-09T07:44:35.378Z",
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"datePublished": "2026-06-24T16:29:27.154Z",
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"dateUpdated": "2026-10-30T12:26:29.040Z"
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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": "2026-10-30T12:26:29.040Z"
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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\nf2fs: fix data loss caused by incorrect use of nat_entry flag\n\nData loss can occur when fsync is performed on a newly created file\n(before any checkpoint has been written) concurrently with a checkpoint\noperation. The scenario is as follows:\n\ncreate & write & fsync 'file A' write checkpoint\n- f2fs_do_sync_file // inline inode\n - f2fs_write_inode // inode folio is dirty\n - f2fs_write_checkpoint\n - f2fs_flush_merged_writes\n - f2fs_sync_node_pages\n - f2fs_flush_nat_entries\n - f2fs_fsync_node_pages // no dirty node\n - f2fs_need_inode_block_update // return false\n SPO and lost 'file A'\n\nf2fs_flush_nat_entries() sets the IS_CHECKPOINTED and HAS_LAST_FSYNC\nflags for the nat_entry, but this does not mean that the checkpoint has\nactually completed successfully. However, f2fs_need_inode_block_update()\nchecks these flags and incorrectly assumes that the checkpoint has\nfinished.\n\nThe root cause is that the semantics of IS_CHECKPOINTED and\nHAS_LAST_FSYNC are only guaranteed after the checkpoint write fully\ncompletes.\n\nThis patch modifies f2fs_need_inode_block_update() to acquire the\nsbi->node_write lock before reading the nat_entry flags, ensuring that\nonce IS_CHECKPOINTED and HAS_LAST_FSYNC are observed to be set, the\ncheckpoint operation has already completed."
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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/f2fs/node.c"
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],
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"versions": [
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{
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"version": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "eb65e8c7bd0a78a470cbdd3ff96232ba4a2ace89",
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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": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "0645fa4d48e9b77d93f8b7a1c1fea58a97c2f8b0",
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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": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "9fd3bcb54a6afea5fa8a828d010561143560b7c5",
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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": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "cb06a07d835ba1ea250785a796243bb483e65816",
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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": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "20cedb4d9f6b230d0ee469690b8f868f06a07c29",
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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": "e05df3b115e7308afbca652769b54e4549fcc723",
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"lessThan": "238e14eb7226f883b72caccd2d37bf5707df066b",
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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/f2fs/node.c"
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],
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"versions": [
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{
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"version": "3.8",
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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": "3.8",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.114",
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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": "7.0.10",
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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": "3.8",
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"versionEndExcluding": "6.1.191"
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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": "3.8",
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"versionEndExcluding": "6.6.160"
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"versionStartIncluding": "3.8",
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"versionEndExcluding": "6.18.57"
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/eb65e8c7bd0a78a470cbdd3ff96232ba4a2ace89"
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},
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{
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"url": "https://git.kernel.org/stable/c/0645fa4d48e9b77d93f8b7a1c1fea58a97c2f8b0"
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},
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{
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"url": "https://git.kernel.org/stable/c/9fd3bcb54a6afea5fa8a828d010561143560b7c5"
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},
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{
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"url": "https://git.kernel.org/stable/c/cb06a07d835ba1ea250785a796243bb483e65816"
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},
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{
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"url": "https://git.kernel.org/stable/c/20cedb4d9f6b230d0ee469690b8f868f06a07c29"
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},
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{
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"url": "https://git.kernel.org/stable/c/238e14eb7226f883b72caccd2d37bf5707df066b"
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}
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],
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"title": "f2fs: fix data loss caused by incorrect use of nat_entry flag",
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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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} |