{"id":"CVE-2026-99052","aliases":[],"cve":{"records":[{"id":"CVE-2026-99052","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.388Z","published":"2026-10-23T12:22:34.168Z","modified":"2026-10-30T12:41:19.103Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:41:19.103Z"}],"references":[{"url":"https://git.kernel.org/stable/c/22987d24a159ed7df3cdc9090ca5d61e58df0cac","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/2f0f1f5a3b89c1ed67e39be49d29ee7f5c96e039","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/dc579e43b13cb65e55eabaae4f1a950e43567fb1","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a545def625860d4ccedc14fe45e884a62a041cef","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a6da93c625b3557dd23ff6db45d2d1bafeae1565","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/c997832414f1d846de0a1fa38d7d4f62ba2ea917","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/28b7260548af3d35773477993ad4e4de41578dd7","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":"3.11","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"selinux: preserve NATIVE_LABELS on already-initialized sb in set_mnt_opts","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: preserve NATIVE_LABELS on already-initialized sb in set_mnt_opts\n\nWhen an NFSv4 filesystem exported with security_label is mounted a\nsecond time, sget_fc() returns the existing superblock and\nnfs_get_root() calls security_sb_set_mnt_opts() again on it. Since the\nsuperblock is already SB_INITIALIZED, selinux_set_mnt_opts() takes an\nearly exit without setting SECURITY_LSM_NATIVE_LABELS in\n*set_kern_flags. nfs_get_root() then sees kflags without\nSECURITY_LSM_NATIVE_LABELS set and clears NFS_CAP_SECURITY_LABEL on\nthe shared nfs_server, silently disabling per-file labeling for both\nthe new and the original mount.\n\nCommit 3815a245b501 (\"security/selinux: fix SECURITY_LSM_NATIVE_LABELS\non reused superblock\") fixed the same problem in\nselinux_sb_clone_mnt_opts().  The reused-superblock path for a plain\nsecond mount now goes through sb_set_mnt_opts rather than\nsb_clone_mnt_opts, so it needs the same treatment: on both\nSE_SBINITIALIZED early exits, set SECURITY_LSM_NATIVE_LABELS in\n*set_kern_flags when the superblock was already using\nSECURITY_FS_USE_NATVE.","score":null,"severity":"unknown","published":"2026-10-23T12:22:34.168Z","modified":"2026-10-30T12:41:19.103Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"22987d24a159ed7df3cdc9090ca5d61e58df0cac","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"2f0f1f5a3b89c1ed67e39be49d29ee7f5c96e039","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"dc579e43b13cb65e55eabaae4f1a950e43567fb1","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"a545def625860d4ccedc14fe45e884a62a041cef","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"a6da93c625b3557dd23ff6db45d2d1bafeae1565","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"c997832414f1d846de0a1fa38d7d4f62ba2ea917","versionType":"git"},{"version":"eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864","status":"affected","lessThan":"28b7260548af3d35773477993ad4e4de41578dd7","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99052"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"3.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.11","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99052"}],"remediation":[],"references":["https://git.kernel.org/stable/c/22987d24a159ed7df3cdc9090ca5d61e58df0cac","https://git.kernel.org/stable/c/2f0f1f5a3b89c1ed67e39be49d29ee7f5c96e039","https://git.kernel.org/stable/c/dc579e43b13cb65e55eabaae4f1a950e43567fb1","https://git.kernel.org/stable/c/a545def625860d4ccedc14fe45e884a62a041cef","https://git.kernel.org/stable/c/a6da93c625b3557dd23ff6db45d2d1bafeae1565","https://git.kernel.org/stable/c/5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b","https://git.kernel.org/stable/c/c997832414f1d846de0a1fa38d7d4f62ba2ea917","https://git.kernel.org/stable/c/28b7260548af3d35773477993ad4e4de41578dd7"],"sources":[{"name":"CVE","id":"CVE-2026-99052","modified":"2026-10-30T12:41:19.103Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99052"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:11:25.376Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:05:31.288Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}