CVE-2026-45915

{"id": "CVE-2026-45915", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "7fe0de287e931e07cb96ecf1f449b2ebdb0e1115", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "9894c79fd9466612d0514be157b5c30cd93aa645", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "cd569b87378b9c33ae13c23d6bb9d205d66f7c4b", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "d3b7ffa90f613938128432c7b2f35b7aa4bdd86b", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "955c5d670b5ae07c78f4345e23a895638db96ce1", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "17866f8a0822d414cb02e621cf003a7d04396ef8", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0", "versionType": "git"}, {"status": "affected", "version": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "lessThan": "8cafcb881364af5ef3a8b9fed4db254054033d8a", "versionType": "git"}], "programFiles": ["fs/fat/namei_msdos.c", "fs/fat/namei_vfat.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.19"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.19", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.252", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.202", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.165", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.128", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.14", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.4", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/fat/namei_msdos.c", "fs/fat/namei_vfat.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:17:06.320", "references": [{"url": "https://git.kernel.org/stable/c/17866f8a0822d414cb02e621cf003a7d04396ef8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7fe0de287e931e07cb96ecf1f449b2ebdb0e1115", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8cafcb881364af5ef3a8b9fed4db254054033d8a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/955c5d670b5ae07c78f4345e23a895638db96ce1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9894c79fd9466612d0514be157b5c30cd93aa645", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cd569b87378b9c33ae13c23d6bb9d205d66f7c4b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d3b7ffa90f613938128432c7b2f35b7aa4bdd86b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfat: avoid parent link count underflow in rmdir\n\nCorrupted FAT images can leave a directory inode with an incorrect\ni_nlink (e.g. 2 even though subdirectories exist). rmdir then\nunconditionally calls drop_nlink(dir) and can drive i_nlink to 0,\ntriggering the WARN_ON in drop_nlink().\n\nAdd a sanity check in vfat_rmdir() and msdos_rmdir(): only drop the\nparent link count when it is at least 3, otherwise report a filesystem\nerror."}], "lastModified": "2026-06-24T17:23:37.130", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "128F081F-CEB9-49AD-8832-F177C6299DED", "versionEndExcluding": "5.10.252", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4002FC2B-1456-4666-B240-0EBF590C4671", "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}