{"api_version":"1","generated_at":"2026-10-23T01:16:46+00:00","cve":"CVE-2026-98793","urls":{"html":"https://cve.report/CVE-2026-98793","api":"https://cve.report/api/cve/CVE-2026-98793.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98793","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98793"},"summary":{"title":"netfilter: bpf: reject invalid NAT manipulation types","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bpf: reject invalid NAT manipulation types\n\nAs bpf_ct_set_nat_info() is not validating the NAT manipulation type a\nwrong value can be passed directly to nf_nat_setup_info(). This triggers\nthe WARN_ON() at nf_nat_setup_info() and if panic_on_warn isn't set,\nthen IPS_SRC_NAT_DONE is set without adding nat_bysource and conntrack\ncleanup tries to unlink an uninitialized hlist node.\n\nFix this by checking that NAT manipulation type is correct before\ncalling nf_nat_setup_info(). In addition, if the WARN_ON is hit, return\nNF_DROP instead of continuing with the processing to avoid similar\nsituations in the future.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:33","updated_at":"2026-10-21 13:21:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/58108f05b0502448f6bb612ee2eccc63bd6449cb","name":"https://git.kernel.org/stable/c/58108f05b0502448f6bb612ee2eccc63bd6449cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/752492947be3123ea6c689e2f93ae04ecd675d42","name":"https://git.kernel.org/stable/c/752492947be3123ea6c689e2f93ae04ecd675d42","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/16d464013ec2267b00a83f4bfbb97b3ecc63bfa7","name":"https://git.kernel.org/stable/c/16d464013ec2267b00a83f4bfbb97b3ecc63bfa7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f6143ae109df56d51d5536e813deb19eee7a6205","name":"https://git.kernel.org/stable/c/f6143ae109df56d51d5536e813deb19eee7a6205","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058","name":"https://git.kernel.org/stable/c/ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98793","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98793","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 752492947be3123ea6c689e2f93ae04ecd675d42 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 f6143ae109df56d51d5536e813deb19eee7a6205 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 58108f05b0502448f6bb612ee2eccc63bd6449cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 16d464013ec2267b00a83f4bfbb97b3ecc63bfa7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98793","cve":"CVE-2026-98793","epss":"0.001680000","percentile":"0.057170000","score_date":"2026-10-21","updated_at":"2026-10-22 00:15:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_nat_bpf.c","net/netfilter/nf_nat_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"752492947be3123ea6c689e2f93ae04ecd675d42","status":"affected","version":"0fabd2aa199faeb8754aee94658f2c48ccb2c8c3","versionType":"git"},{"lessThan":"ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058","status":"affected","version":"0fabd2aa199faeb8754aee94658f2c48ccb2c8c3","versionType":"git"},{"lessThan":"f6143ae109df56d51d5536e813deb19eee7a6205","status":"affected","version":"0fabd2aa199faeb8754aee94658f2c48ccb2c8c3","versionType":"git"},{"lessThan":"58108f05b0502448f6bb612ee2eccc63bd6449cb","status":"affected","version":"0fabd2aa199faeb8754aee94658f2c48ccb2c8c3","versionType":"git"},{"lessThan":"16d464013ec2267b00a83f4bfbb97b3ecc63bfa7","status":"affected","version":"0fabd2aa199faeb8754aee94658f2c48ccb2c8c3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_nat_bpf.c","net/netfilter/nf_nat_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.1"},{"lessThan":"6.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bpf: reject invalid NAT manipulation types\n\nAs bpf_ct_set_nat_info() is not validating the NAT manipulation type a\nwrong value can be passed directly to nf_nat_setup_info(). This triggers\nthe WARN_ON() at nf_nat_setup_info() and if panic_on_warn isn't set,\nthen IPS_SRC_NAT_DONE is set without adding nat_bysource and conntrack\ncleanup tries to unlink an uninitialized hlist node.\n\nFix this by checking that NAT manipulation type is correct before\ncalling nf_nat_setup_info(). In addition, if the WARN_ON is hit, return\nNF_DROP instead of continuing with the processing to avoid similar\nsituations in the future."}],"providerMetadata":{"dateUpdated":"2026-10-21T12:57:02.773Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/752492947be3123ea6c689e2f93ae04ecd675d42"},{"url":"https://git.kernel.org/stable/c/ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058"},{"url":"https://git.kernel.org/stable/c/f6143ae109df56d51d5536e813deb19eee7a6205"},{"url":"https://git.kernel.org/stable/c/58108f05b0502448f6bb612ee2eccc63bd6449cb"},{"url":"https://git.kernel.org/stable/c/16d464013ec2267b00a83f4bfbb97b3ecc63bfa7"}],"title":"netfilter: bpf: reject invalid NAT manipulation types","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98793","datePublished":"2026-10-18T15:48:33.555Z","dateReserved":"2026-09-25T10:25:14.370Z","dateUpdated":"2026-10-21T12:57:02.773Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:33","lastModifiedDate":"2026-10-21 13:21:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98793","Ordinal":"1","Title":"netfilter: bpf: reject invalid NAT manipulation types","CVE":"CVE-2026-98793","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98793","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bpf: reject invalid NAT manipulation types\n\nAs bpf_ct_set_nat_info() is not validating the NAT manipulation type a\nwrong value can be passed directly to nf_nat_setup_info(). This triggers\nthe WARN_ON() at nf_nat_setup_info() and if panic_on_warn isn't set,\nthen IPS_SRC_NAT_DONE is set without adding nat_bysource and conntrack\ncleanup tries to unlink an uninitialized hlist node.\n\nFix this by checking that NAT manipulation type is correct before\ncalling nf_nat_setup_info(). In addition, if the WARN_ON is hit, return\nNF_DROP instead of continuing with the processing to avoid similar\nsituations in the future.","Type":"Description","Title":"netfilter: bpf: reject invalid NAT manipulation types"}]}}}