122 lines
6.6 KiB
JSON
122 lines
6.6 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-2026-72205",
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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": "2026-08-09T03:40:39.912Z",
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"datePublished": "2026-08-15T05:54:01.803Z",
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"dateUpdated": "2026-08-18T06:56:24.809Z"
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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": "2026-08-18T06:56:24.809Z"
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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: free volume-wide resources on fill_super failure\n\nntfs_fill_super()'s err_out_now path frees only the volume struct via\nkfree(vol), leaving several vol-owned allocations behind on every mount\nfailure:\n\n - vol->nls_map, loaded by ntfs_init_fs_context() via\n load_nls_default() (or replaced by an explicit nls= option in\n ntfs_parse_param()), is never unload_nls()'d.\n\n - vol->volume_label, allocated by load_system_files() through\n ntfs_ucstonls() once the $Volume name attribute has been parsed, is\n not released by load_system_files()'s own error labels nor by the\n fill_super() inline cleanup that only runs on d_make_root()\n failure. Any later failure inside load_system_files() leaks it.\n\n - vol->lcn_empty_bits_per_page was kvfree()'d in\n unl_upcase_iput_tmp_ino_err_out_now without clearing the pointer,\n so it could not be folded into a single common cleanup.\n\nBecause the failure paths never call ntfs_volume_free() and never reach\nthe d_make_root() inline cleanup block (it sits above the label and is\njumped over by the load_system_files() / kvmalloc failure gotos), these\nresources accumulate per failed mount attempt with no chance of\nrecovery short of unloading the module. This is a silent leak: the\ninodes loaded prior to failure remain hashed but generic_shutdown_super()\nskips evict_inodes() when sb->s_root is unset, so no CHECK_DATA_CORRUPTION\nwarning is emitted either.\n\nMove the per-volume frees down to err_out_now and drop the\nlcn_empty_bits_per_page kvfree() from the upper label so the cleanup is\nperformed exactly once on every failure path. Using unconditional\nkvfree() / kfree() / unload_nls() is safe because they all accept NULL\nand the upper labels that previously freed nls_map (the d_make_root()\ninline cleanup) already clear the pointer."
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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/super.c"
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],
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"versions": [
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{
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"version": "6251f0b0de7d645e3591931ca4c11d8322c1866f",
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"lessThan": "aca3d383a23cb7f3a2849c09fda3974f1838d941",
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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": "6251f0b0de7d645e3591931ca4c11d8322c1866f",
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"lessThan": "a9523a7d3b24b3a6b25ec1eb668ee6618cacf05e",
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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/super.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/aca3d383a23cb7f3a2849c09fda3974f1838d941"
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},
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{
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"url": "https://git.kernel.org/stable/c/a9523a7d3b24b3a6b25ec1eb668ee6618cacf05e"
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}
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],
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"title": "ntfs: free volume-wide resources on fill_super failure",
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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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} |