{"api_version":"1","generated_at":"2026-08-22T21:52:59+00:00","cve":"CVE-2026-74724","urls":{"html":"https://cve.report/CVE-2026-74724","api":"https://cve.report/api/cve/CVE-2026-74724.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74724","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74724"},"summary":{"title":"ipvs: avoid out-of-bounds write in ip_vs_nat_icmp","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: avoid out-of-bounds write in ip_vs_nat_icmp\n\nSashiko warns that local attacker can modify the packet\nwhile it is processed by IPVS. Some places read the\nIP ihl field multiple times which can cause out-of-bounds\naccess. One such place is ip_vs_nat_icmp where we\ncan write after the validated area.\n\nFix it by providing ciph argument just like it is done for\nIPv6 and use ciph->len as offset to the embedded transport\nheader.\n\nModify some IPv4 header checks by reading the ihl field\nonly once.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:47","updated_at":"2026-08-22 16:16:47"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3c779b258c9c3c3567af68d4f45c2f751f35bd0e","name":"https://git.kernel.org/stable/c/3c779b258c9c3c3567af68d4f45c2f751f35bd0e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3b8f79af0e98f27b932b0b416e9c52b692d31ff9","name":"https://git.kernel.org/stable/c/3b8f79af0e98f27b932b0b416e9c52b692d31ff9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/be65fa324640c7a95e30b146159a2be5cc73f22e","name":"https://git.kernel.org/stable/c/be65fa324640c7a95e30b146159a2be5cc73f22e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/243d0187ec4c3837b9b0004f18d1068e46115760","name":"https://git.kernel.org/stable/c/243d0187ec4c3837b9b0004f18d1068e46115760","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/646922a0379496154e8c8faca4f8e2fd9100cacc","name":"https://git.kernel.org/stable/c/646922a0379496154e8c8faca4f8e2fd9100cacc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a69a4b3fff5814d079beff9a1e9d369994b2ed47","name":"https://git.kernel.org/stable/c/a69a4b3fff5814d079beff9a1e9d369994b2ed47","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74724","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74724","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 3b8f79af0e98f27b932b0b416e9c52b692d31ff9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 3c779b258c9c3c3567af68d4f45c2f751f35bd0e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 be65fa324640c7a95e30b146159a2be5cc73f22e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a69a4b3fff5814d079beff9a1e9d369994b2ed47 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 243d0187ec4c3837b9b0004f18d1068e46115760 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 646922a0379496154e8c8faca4f8e2fd9100cacc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.183 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.152 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* 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":["include/net/ip_vs.h","net/netfilter/ipvs/ip_vs_core.c","net/netfilter/ipvs/ip_vs_xmit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3b8f79af0e98f27b932b0b416e9c52b692d31ff9","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"3c779b258c9c3c3567af68d4f45c2f751f35bd0e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"be65fa324640c7a95e30b146159a2be5cc73f22e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a69a4b3fff5814d079beff9a1e9d369994b2ed47","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"243d0187ec4c3837b9b0004f18d1068e46115760","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"646922a0379496154e8c8faca4f8e2fd9100cacc","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/ip_vs.h","net/netfilter/ipvs/ip_vs_core.c","net/netfilter/ipvs/ip_vs_xmit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.152","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","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":"6.1.183","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: avoid out-of-bounds write in ip_vs_nat_icmp\n\nSashiko warns that local attacker can modify the packet\nwhile it is processed by IPVS. Some places read the\nIP ihl field multiple times which can cause out-of-bounds\naccess. One such place is ip_vs_nat_icmp where we\ncan write after the validated area.\n\nFix it by providing ciph argument just like it is done for\nIPv6 and use ciph->len as offset to the embedded transport\nheader.\n\nModify some IPv4 header checks by reading the ihl field\nonly once."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:33:15.832Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3b8f79af0e98f27b932b0b416e9c52b692d31ff9"},{"url":"https://git.kernel.org/stable/c/3c779b258c9c3c3567af68d4f45c2f751f35bd0e"},{"url":"https://git.kernel.org/stable/c/be65fa324640c7a95e30b146159a2be5cc73f22e"},{"url":"https://git.kernel.org/stable/c/a69a4b3fff5814d079beff9a1e9d369994b2ed47"},{"url":"https://git.kernel.org/stable/c/243d0187ec4c3837b9b0004f18d1068e46115760"},{"url":"https://git.kernel.org/stable/c/646922a0379496154e8c8faca4f8e2fd9100cacc"}],"title":"ipvs: avoid out-of-bounds write in ip_vs_nat_icmp","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74724","datePublished":"2026-08-22T15:33:15.832Z","dateReserved":"2026-08-15T05:44:03.929Z","dateUpdated":"2026-08-22T15:33:15.832Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:47","lastModifiedDate":"2026-08-22 16:16:47","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74724","Ordinal":"1","Title":"ipvs: avoid out-of-bounds write in ip_vs_nat_icmp","CVE":"CVE-2026-74724","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74724","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: avoid out-of-bounds write in ip_vs_nat_icmp\n\nSashiko warns that local attacker can modify the packet\nwhile it is processed by IPVS. Some places read the\nIP ihl field multiple times which can cause out-of-bounds\naccess. One such place is ip_vs_nat_icmp where we\ncan write after the validated area.\n\nFix it by providing ciph argument just like it is done for\nIPv6 and use ciph->len as offset to the embedded transport\nheader.\n\nModify some IPv4 header checks by reading the ihl field\nonly once.","Type":"Description","Title":"ipvs: avoid out-of-bounds write in ip_vs_nat_icmp"}]}}}