{"api_version":"1","generated_at":"2026-04-23T11:35:04+00:00","cve":"CVE-2026-31471","urls":{"html":"https://cve.report/CVE-2026-31471","api":"https://cve.report/api/cve/CVE-2026-31471.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31471","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31471"},"summary":{"title":"xfrm: iptfs: only publish mode_data after clone setup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x->mode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x->mode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x->mode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x->mode_data unset. The destroy path already\nhandles a NULL mode_data pointer.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-22 14:16:43","updated_at":"2026-04-22 14:16:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7","name":"https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1","name":"https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e","name":"https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31471","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31471","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6be02e3e4f376fea468846c8562655ca5ee18204 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6be02e3e4f376fea468846c8562655ca5ee18204 5784a1e2889c9525a8f036cb586930e232170bf7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6be02e3e4f376fea468846c8562655ca5ee18204 d849a2f7309fc0616e79d13b008b0a47e0458b6e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.21 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.11 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * 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":["net/xfrm/xfrm_iptfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1","status":"affected","version":"6be02e3e4f376fea468846c8562655ca5ee18204","versionType":"git"},{"lessThan":"5784a1e2889c9525a8f036cb586930e232170bf7","status":"affected","version":"6be02e3e4f376fea468846c8562655ca5ee18204","versionType":"git"},{"lessThan":"d849a2f7309fc0616e79d13b008b0a47e0458b6e","status":"affected","version":"6be02e3e4f376fea468846c8562655ca5ee18204","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/xfrm/xfrm_iptfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.21","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.11","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x->mode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x->mode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x->mode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x->mode_data unset. The destroy path already\nhandles a NULL mode_data pointer."}],"providerMetadata":{"dateUpdated":"2026-04-22T13:53:59.595Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1"},{"url":"https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7"},{"url":"https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e"}],"title":"xfrm: iptfs: only publish mode_data after clone setup","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31471","datePublished":"2026-04-22T13:53:59.595Z","dateReserved":"2026-03-09T15:48:24.098Z","dateUpdated":"2026-04-22T13:53:59.595Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-22 14:16:43","lastModifiedDate":"2026-04-22 14:16:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31471","Ordinal":"1","Title":"xfrm: iptfs: only publish mode_data after clone setup","CVE":"CVE-2026-31471","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31471","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x->mode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x->mode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x->mode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x->mode_data unset. The destroy path already\nhandles a NULL mode_data pointer.","Type":"Description","Title":"xfrm: iptfs: only publish mode_data after clone setup"}]}}}