{"api_version":"1","generated_at":"2026-05-30T17:59:36+00:00","cve":"CVE-2026-46164","urls":{"html":"https://cve.report/CVE-2026-46164","api":"https://cve.report/api/cve/CVE-2026-46164.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46164","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46164"},"summary":{"title":"btrfs: fix double free in create_space_info_sub_group() error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix double free in create_space_info_sub_group() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info_sub_group()\n-> btrfs_sysfs_add_space_info_type()\n-> kobject_init_and_add()\n-> failure\n-> kobject_put(&sub_group->kobj)\n-> space_info_release()\n-> kfree(sub_group)\n\nThen control returns to create_space_info_sub_group(), where:\n\nbtrfs_sysfs_add_space_info_type() returns error\n-> kfree(sub_group)\n\nThus, sub_group is freed twice.\n\nKeep parent->sub_group[index] = NULL for the failure path, but after\nbtrfs_sysfs_add_space_info_type() has called kobject_put(), let the\nkobject release callback handle the cleanup.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:32","updated_at":"2026-05-30 11:17:24"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf","name":"https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728","name":"https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd","name":"https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21","name":"https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1","name":"https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46164","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46164","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0bd151ce4200ca847990e05cca29a76456982ca5 d2a675f2e238ec96c8e91e2718c1f910c9c8fb21 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 190d5a7c4fe42b8c9aa46e3336389e7cb10395bb 14b22be1dd844383eb03af9b1ee3b6b25d32aeaf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 dfd05a16b5c9d1d98b47905f37f2fccda52173d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 259af6857a1b4f1e9ef8b780353f9d11c26a22bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 a7449edf96143f192606ec8647e3167e1ecbd728 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 64c7ddda83acfbaa0efb381a1928ce908c584607 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.122 6.6.141 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.67 6.12.90 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.162 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.90 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.32 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46164","cve":"CVE-2026-46164","epss":"0.000180000","percentile":"0.051640000","score_date":"2026-05-29","updated_at":"2026-05-30 00:13:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/btrfs/space-info.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d2a675f2e238ec96c8e91e2718c1f910c9c8fb21","status":"affected","version":"0bd151ce4200ca847990e05cca29a76456982ca5","versionType":"git"},{"lessThan":"14b22be1dd844383eb03af9b1ee3b6b25d32aeaf","status":"affected","version":"190d5a7c4fe42b8c9aa46e3336389e7cb10395bb","versionType":"git"},{"lessThan":"dfd05a16b5c9d1d98b47905f37f2fccda52173d1","status":"affected","version":"f92ee31e031c7819126d2febdda0c3e91f5d2eb9","versionType":"git"},{"lessThan":"259af6857a1b4f1e9ef8b780353f9d11c26a22bd","status":"affected","version":"f92ee31e031c7819126d2febdda0c3e91f5d2eb9","versionType":"git"},{"lessThan":"a7449edf96143f192606ec8647e3167e1ecbd728","status":"affected","version":"f92ee31e031c7819126d2febdda0c3e91f5d2eb9","versionType":"git"},{"status":"affected","version":"64c7ddda83acfbaa0efb381a1928ce908c584607","versionType":"git"},{"lessThan":"6.6.141","status":"affected","version":"6.6.122","versionType":"semver"},{"lessThan":"6.12.90","status":"affected","version":"6.12.67","versionType":"semver"},{"lessThan":"6.2","status":"affected","version":"6.1.162","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/space-info.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.90","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.32","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"6.6.122","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.90","versionStartIncluding":"6.12.67","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.32","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.7","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.162","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix double free in create_space_info_sub_group() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info_sub_group()\n-> btrfs_sysfs_add_space_info_type()\n-> kobject_init_and_add()\n-> failure\n-> kobject_put(&sub_group->kobj)\n-> space_info_release()\n-> kfree(sub_group)\n\nThen control returns to create_space_info_sub_group(), where:\n\nbtrfs_sysfs_add_space_info_type() returns error\n-> kfree(sub_group)\n\nThus, sub_group is freed twice.\n\nKeep parent->sub_group[index] = NULL for the failure path, but after\nbtrfs_sysfs_add_space_info_type() has called kobject_put(), let the\nkobject release callback handle the cleanup."}],"metrics":[{"cvssV3_1":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-30T10:48:32.353Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21"},{"url":"https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf"},{"url":"https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1"},{"url":"https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd"},{"url":"https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728"}],"title":"btrfs: fix double free in create_space_info_sub_group() error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46164","datePublished":"2026-05-28T09:36:19.810Z","dateReserved":"2026-05-13T15:03:33.102Z","dateUpdated":"2026-05-30T10:48:32.353Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:32","lastModifiedDate":"2026-05-30 11:17:24","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46164","Ordinal":"1","Title":"btrfs: fix double free in create_space_info_sub_group() error pa","CVE":"CVE-2026-46164","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46164","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix double free in create_space_info_sub_group() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info_sub_group()\n-> btrfs_sysfs_add_space_info_type()\n-> kobject_init_and_add()\n-> failure\n-> kobject_put(&sub_group->kobj)\n-> space_info_release()\n-> kfree(sub_group)\n\nThen control returns to create_space_info_sub_group(), where:\n\nbtrfs_sysfs_add_space_info_type() returns error\n-> kfree(sub_group)\n\nThus, sub_group is freed twice.\n\nKeep parent->sub_group[index] = NULL for the failure path, but after\nbtrfs_sysfs_add_space_info_type() has called kobject_put(), let the\nkobject release callback handle the cleanup.","Type":"Description","Title":"btrfs: fix double free in create_space_info_sub_group() error pa"}]}}}