{"cve":"CVE-2026-72326","nvd":{"published":"2026-08-15T06:22:05.660","modified":"2026-08-17T06:18:36.153","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cake: reject overhead values that underflow length\n\nCAKE accepts signed overhead values and stores them in an s16, but the\nadjusted packet length calculation uses unsigned arithmetic.  A negative\neffective length can therefore wrap to a large value.\n\nSuch configurations make rate accounting depend on integer wraparound\nrather than on the packet size userspace intended to model.  A static\nnetlink lower bound is not enough because packets reaching CAKE can be\nsmaller than any reasonable manual-overhead allowance.\n\nFold the signed overhead adjustment into the existing datapath MPU clamp\nso negative adjusted lengths are clamped before link-layer framing\nadjustments.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/297f459865360b46a887667cbf3aac6a6f013841","https://git.kernel.org/stable/c/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b","https://git.kernel.org/stable/c/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5","https://git.kernel.org/stable/c/b7f97cae7ec1b6c3c32843c42be218690d310467","https://git.kernel.org/stable/c/bcdf3a3664f7d2c4e37e155f30f72ef33f041804"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-72326","score":0.0022,"percentile":0.12507,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}