{"id":"CVE-2026-93786","aliases":[],"cve":{"records":[{"id":"CVE-2026-93786","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-18T17:59:28.788Z","published":"2026-09-24T16:02:19.798Z","modified":"2026-10-30T12:36:40.711Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:36:40.711Z"}],"references":[{"url":"https://git.kernel.org/stable/c/8493da704275ca5ab67fb88c0ae7b71576e91951","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/4a19bb1c45667f5a5f6eff9cf6648e0f692d046f","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/591acf171644de590cda245fd8595b473a1beb70","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/0093909becbda22b62b39b654dbc607faed59cd0","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e148e567a9252643baa125cb65d7ae9c2c6cf68a","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2"}]}]}]}],"prioritization":[]},"title":"ksmbd: preserve VFS inherited POSIX ACL mask","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: preserve VFS inherited POSIX ACL mask\n\nThe VFS initializes a child's POSIX ACL from the parent's default ACL and\nthe requested creation mode. Do not mutate the parent ACL or overwrite the\nchild's VFS-computed access and default ACLs afterwards.\n\nThis preserves restrictive ACL_MASK entries and prevents SMB object creation\nfrom widening effective permissions.","score":8.1,"severity":"high","published":"2026-09-24T16:02:19.798Z","modified":"2026-10-30T12:36:40.711Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"f44158485826c076335d6860d35872271a83791d","status":"affected","lessThan":"8493da704275ca5ab67fb88c0ae7b71576e91951","versionType":"git"},{"version":"f44158485826c076335d6860d35872271a83791d","status":"affected","lessThan":"4a19bb1c45667f5a5f6eff9cf6648e0f692d046f","versionType":"git"},{"version":"f44158485826c076335d6860d35872271a83791d","status":"affected","lessThan":"591acf171644de590cda245fd8595b473a1beb70","versionType":"git"},{"version":"f44158485826c076335d6860d35872271a83791d","status":"affected","lessThan":"0093909becbda22b62b39b654dbc607faed59cd0","versionType":"git"},{"version":"f44158485826c076335d6860d35872271a83791d","status":"affected","lessThan":"e148e567a9252643baa125cb65d7ae9c2c6cf68a","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93786"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93786"}],"remediation":[],"references":["https://git.kernel.org/stable/c/8493da704275ca5ab67fb88c0ae7b71576e91951","https://git.kernel.org/stable/c/4a19bb1c45667f5a5f6eff9cf6648e0f692d046f","https://git.kernel.org/stable/c/591acf171644de590cda245fd8595b473a1beb70","https://git.kernel.org/stable/c/0093909becbda22b62b39b654dbc607faed59cd0","https://git.kernel.org/stable/c/e148e567a9252643baa125cb65d7ae9c2c6cf68a"],"sources":[{"name":"CVE","id":"CVE-2026-93786","modified":"2026-10-30T12:36:40.711Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93786"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1}],"sourceAffected":[],"observedAt":"2026-10-30T13:55:59.799Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:10:33.488Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}