{"api_version":"1","generated_at":"2026-10-26T06:23:21+00:00","cve":"CVE-2026-98872","urls":{"html":"https://cve.report/CVE-2026-98872","api":"https://cve.report/api/cve/CVE-2026-98872.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98872","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98872"},"summary":{"title":"freevxfs: don't BUG() on unknown typed-extent type","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don't BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 12:18:20","updated_at":"2026-10-23 12:18:20"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300","name":"https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c","name":"https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b","name":"https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6","name":"https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4","name":"https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821","name":"https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65","name":"https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98872","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98872","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 fe40a19d571cbb584eea46038ee919d8712b2d2c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 500e9d5bf9eff2096a21b7ac25a0a06ca46ab821 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 f1f2d54a576f0e4133b979e545abcfefd439c300 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 7ada9807e37103b41f586d34e3075e1209182b65 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1284d687d46953fff9c0d969df108114611aca8b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 405f13d7b270913e06e8e2b4de568985f94ef7d6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 704d48d81dc41470e108811c32c577ada66192d4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.271 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.222 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.189 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.158 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.111 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.53 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.271 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/freevxfs/vxfs_bmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fe40a19d571cbb584eea46038ee919d8712b2d2c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"500e9d5bf9eff2096a21b7ac25a0a06ca46ab821","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f1f2d54a576f0e4133b979e545abcfefd439c300","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"7ada9807e37103b41f586d34e3075e1209182b65","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"1284d687d46953fff9c0d969df108114611aca8b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"405f13d7b270913e06e8e2b4de568985f94ef7d6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"704d48d81dc41470e108811c32c577ada66192d4","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"5.10.271","status":"affected","version":"0","versionType":"semver"},{"lessThan":"5.15.222","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.1.189","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.6.158","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.12.111","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.53","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/freevxfs/vxfs_bmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.271","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don't BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly."}],"providerMetadata":{"dateUpdated":"2026-10-23T11:37:11.214Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c"},{"url":"https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821"},{"url":"https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300"},{"url":"https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65"},{"url":"https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b"},{"url":"https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6"},{"url":"https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4"}],"title":"freevxfs: don't BUG() on unknown typed-extent type","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98872","datePublished":"2026-10-23T11:37:11.214Z","dateReserved":"2026-09-25T10:25:14.377Z","dateUpdated":"2026-10-23T11:37:11.214Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 12:18:20","lastModifiedDate":"2026-10-23 12:18:20","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98872","Ordinal":"1","Title":"freevxfs: don't BUG() on unknown typed-extent type","CVE":"CVE-2026-98872","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98872","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don't BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.","Type":"Description","Title":"freevxfs: don't BUG() on unknown typed-extent type"}]}}}