{"api_version":"1","generated_at":"2026-06-24T17:00:58+00:00","cve":"CVE-2026-52921","urls":{"html":"https://cve.report/CVE-2026-52921","api":"https://cve.report/api/cve/CVE-2026-52921.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52921","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52921"},"summary":{"title":"netfilter: ipset: stop hash:* range iteration at end","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: stop hash:* range iteration at end\n\nThe following hash set variants:\n\nhash:ip,mark\nhash:ip,port\nhash:ip,port,ip\nhash:ip,port,net\n\niterate IPv4 ranges with a 32-bit iterator.\n\nThe iterator must stop once the last address in the requested range has\nbeen processed. Advancing it once more can move the traversal state past\nthe end of the request, so a later retry may continue from an unintended\nposition.\n\nHandle the iterator increment explicitly at the end of the loop and stop\nonce the upper bound has been processed. This keeps the existing retry\nbehaviour intact for valid ranges while preventing traversal from\ncontinuing past the original boundary.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 08:16:22","updated_at":"2026-06-24 08:16:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc","name":"https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901","name":"https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb","name":"https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02","name":"https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4","name":"https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436","name":"https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb","name":"https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6","name":"https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-52921","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52921","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48596a8ddc46f96afb6a2cd72787cb15d6bb01fc be75218fadea22e59c8673db212f29c681bf45bb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48596a8ddc46f96afb6a2cd72787cb15d6bb01fc 383418c20e69f5761b6ec5238f599423f4fb77fb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48596a8ddc46f96afb6a2cd72787cb15d6bb01fc 0d7b33ace701fe397e6e4de145f32e098178d901 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48596a8ddc46f96afb6a2cd72787cb15d6bb01fc c281e018af98df91827d65bec00f4956c00a1b02 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * 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/netfilter/ipset/ip_set_hash_ipmark.c","net/netfilter/ipset/ip_set_hash_ipport.c","net/netfilter/ipset/ip_set_hash_ipportip.c","net/netfilter/ipset/ip_set_hash_ipportnet.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"be75218fadea22e59c8673db212f29c681bf45bb","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"383418c20e69f5761b6ec5238f599423f4fb77fb","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"0d7b33ace701fe397e6e4de145f32e098178d901","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"c281e018af98df91827d65bec00f4956c00a1b02","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"02f75f041a93ea045834da89cd3234f4c1d749b4","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"952e988163c2ab9939c3db9f0f8e77af6a1bb436","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"},{"lessThan":"0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6","status":"affected","version":"48596a8ddc46f96afb6a2cd72787cb15d6bb01fc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/ipset/ip_set_hash_ipmark.c","net/netfilter/ipset/ip_set_hash_ipport.c","net/netfilter/ipset/ip_set_hash_ipportip.c","net/netfilter/ipset/ip_set_hash_ipportnet.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: stop hash:* range iteration at end\n\nThe following hash set variants:\n\nhash:ip,mark\nhash:ip,port\nhash:ip,port,ip\nhash:ip,port,net\n\niterate IPv4 ranges with a 32-bit iterator.\n\nThe iterator must stop once the last address in the requested range has\nbeen processed. Advancing it once more can move the traversal state past\nthe end of the request, so a later retry may continue from an unintended\nposition.\n\nHandle the iterator increment explicitly at the end of the loop and stop\nonce the upper bound has been processed. This keeps the existing retry\nbehaviour intact for valid ranges while preventing traversal from\ncontinuing past the original boundary."}],"providerMetadata":{"dateUpdated":"2026-06-24T07:14:16.533Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb"},{"url":"https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb"},{"url":"https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901"},{"url":"https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02"},{"url":"https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4"},{"url":"https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436"},{"url":"https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc"},{"url":"https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6"}],"title":"netfilter: ipset: stop hash:* range iteration at end","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52921","datePublished":"2026-06-24T07:14:16.533Z","dateReserved":"2026-06-09T07:44:35.367Z","dateUpdated":"2026-06-24T07:14:16.533Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 08:16:22","lastModifiedDate":"2026-06-24 08:16:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52921","Ordinal":"1","Title":"netfilter: ipset: stop hash:* range iteration at end","CVE":"CVE-2026-52921","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52921","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: stop hash:* range iteration at end\n\nThe following hash set variants:\n\nhash:ip,mark\nhash:ip,port\nhash:ip,port,ip\nhash:ip,port,net\n\niterate IPv4 ranges with a 32-bit iterator.\n\nThe iterator must stop once the last address in the requested range has\nbeen processed. Advancing it once more can move the traversal state past\nthe end of the request, so a later retry may continue from an unintended\nposition.\n\nHandle the iterator increment explicitly at the end of the loop and stop\nonce the upper bound has been processed. This keeps the existing retry\nbehaviour intact for valid ranges while preventing traversal from\ncontinuing past the original boundary.","Type":"Description","Title":"netfilter: ipset: stop hash:* range iteration at end"}]}}}