CVE-2026-72349

netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()

N/A

Published: August 15, 2026 at 05:55 AM UTC

Updated: August 17, 2026 at 06:18 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt() On links faster than ~34 Gbps, where byte rate may exceed 2^32-1 (~ 4.3 GBps), the comparison result becomes incorrect because the truncated value no longer reflects the actual estimator rate. Fix by changing the local variables to u64.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.10 ≤ v < 5.10.2614.10 ≤ v < 5.15.2124.10 ≤ v < 6.1.1784.10 ≤ v < 6.12.974.10 ≤ v < 6.18.404.10 ≤ v < 6.6.1454.10 ≤ v < 7.1.54.10 ≤ v < 7.21c0d32fde5bdf1184bc274f864c09799278a11144.10

Vendor states this is fixed in 444853cd438201007da5359821adcc2995655ab1 (fixed)

Vendor states this is fixed in 5da915fc159c6b4091669447588e520183969cca (fixed)

Vendor states this is fixed in 77e9ba358d63fe2eb03c90d29ea85651d95cf2e6 (fixed)

Vendor states this is fixed in 905a927b2e6fec7b174e9e5644d271047b61378f (fixed)

Vendor states this is fixed in a3ba938f45cb00f6bf49d3aa3647df9b017f5f08 (fixed)

Vendor states this is fixed in bab305dd769d78074adca73505cc2509e1206bf2 (fixed)

Vendor states this is fixed in d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b (fixed)

Vendor states this is fixed in e702f6dd5d21e331f55fd9168c0210542008546d (fixed)

Vendor states this is fixed in 4.10 (unaffected)

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)