{"cve":"CVE-2026-72252","nvd":{"published":"2026-08-15T06:21:52.600","modified":"2026-10-16T19:17:17.230","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo: don't leak bad clone into future transaction\n\nOn memory allocation failure the cloned nft_pipapo_match can enter a bad\nstate:\n - some fields can have their lookup tables resized while others did\n   not\n - bits might have been toggled\n - scratch map can be undersized which also means m->bsize_max can be\n   lower than what is required\n\nThis means that the next insertion in the same batch can trigger\nout-of-bounds writes.\n\nFurthermore, a failure in the first can result in the bad clone to\nleak into the next transaction because the abort callback is never\nexecuted in this case (the upper layer saw an error and no attempt to\nallocate a transactional request was made).\n\nRecord a state for the nft_pipapo_match structure:\n- NEW (pristine clone)\n- MOD (modified clone with good state)\n- ERR (potentially bogus content)\n\nThen make it so that deletes and insertions fail when the clone\nentered ERR state.\n\nIn case the very first insert attempt results in an error, free the\nclone right away.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/02b6b0e892aea582590671796fd6eff5b93ea93f","https://git.kernel.org/stable/c/047e813324eac2ac60cddfb58bcdbd0144eadb09","https://git.kernel.org/stable/c/0ab7b1802f63ca5b288ea59acb467830b83abd6b","https://git.kernel.org/stable/c/47e65eff50691f0a5b79d325e28d83ec1da43bcf","https://git.kernel.org/stable/c/610e3b73efaec3dd81a95dcda2421ad7d9795bd0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-72252","score":0.00169,"percentile":0.06195,"date":"2026-10-25"},"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."]}