{"id":"CVE-2026-72349","state":"PUBLISHED","title":"netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()\n\nOn links faster than ~34 Gbps, where byte rate may exceed 2^32-1\n(~ 4.3 GBps), the comparison result becomes incorrect because the\ntruncated value no longer reflects the actual estimator rate.\n\nFix by changing the local variables to u64.","publishedAt":"2026-08-15T05:55:52.916Z","updatedAt":"2026-08-17T05:12:58.965Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"77e9ba358d63fe2eb03c90d29ea85651d95cf2e6","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"a3ba938f45cb00f6bf49d3aa3647df9b017f5f08","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"bab305dd769d78074adca73505cc2509e1206bf2","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"5da915fc159c6b4091669447588e520183969cca","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"e702f6dd5d21e331f55fd9168c0210542008546d","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"905a927b2e6fec7b174e9e5644d271047b61378f","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"444853cd438201007da5359821adcc2995655ab1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_rateest.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_rateest.c"]}],"references":["https://git.kernel.org/stable/c/77e9ba358d63fe2eb03c90d29ea85651d95cf2e6","https://git.kernel.org/stable/c/a3ba938f45cb00f6bf49d3aa3647df9b017f5f08","https://git.kernel.org/stable/c/bab305dd769d78074adca73505cc2509e1206bf2","https://git.kernel.org/stable/c/5da915fc159c6b4091669447588e520183969cca","https://git.kernel.org/stable/c/d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b","https://git.kernel.org/stable/c/e702f6dd5d21e331f55fd9168c0210542008546d","https://git.kernel.org/stable/c/905a927b2e6fec7b174e9e5644d271047b61378f","https://git.kernel.org/stable/c/444853cd438201007da5359821adcc2995655ab1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72349.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72349","state":"PUBLISHED","datePublished":"2026-08-15T05:55:52.916Z","dateUpdated":"2026-08-17T05:12:58.965Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.921Z"},"containers":{"cna":{"title":"netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()\n\nOn links faster than ~34 Gbps, where byte rate may exceed 2^32-1\n(~ 4.3 GBps), the comparison result becomes incorrect because the\ntruncated value no longer reflects the actual estimator rate.\n\nFix by changing the local variables to u64."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"77e9ba358d63fe2eb03c90d29ea85651d95cf2e6","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"a3ba938f45cb00f6bf49d3aa3647df9b017f5f08","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"bab305dd769d78074adca73505cc2509e1206bf2","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"5da915fc159c6b4091669447588e520183969cca","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"e702f6dd5d21e331f55fd9168c0210542008546d","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"905a927b2e6fec7b174e9e5644d271047b61378f","versionType":"git"},{"version":"1c0d32fde5bdf1184bc274f864c09799278a1114","status":"affected","lessThan":"444853cd438201007da5359821adcc2995655ab1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_rateest.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_rateest.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/77e9ba358d63fe2eb03c90d29ea85651d95cf2e6"},{"url":"https://git.kernel.org/stable/c/a3ba938f45cb00f6bf49d3aa3647df9b017f5f08"},{"url":"https://git.kernel.org/stable/c/bab305dd769d78074adca73505cc2509e1206bf2"},{"url":"https://git.kernel.org/stable/c/5da915fc159c6b4091669447588e520183969cca"},{"url":"https://git.kernel.org/stable/c/d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b"},{"url":"https://git.kernel.org/stable/c/e702f6dd5d21e331f55fd9168c0210542008546d"},{"url":"https://git.kernel.org/stable/c/905a927b2e6fec7b174e9e5644d271047b61378f"},{"url":"https://git.kernel.org/stable/c/444853cd438201007da5359821adcc2995655ab1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:12:58.965Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}