{"cve":"CVE-2026-97599","nvd":{"published":"2026-09-25T11:17:11.243","modified":"2026-10-19T10:17:29.587","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: hwsim: serialize pib updates to fix double-free\n\nhwsim_update_pib() does an unserialized read-swap-free of phy->pib:\n\n\tpib_old = rtnl_dereference(phy->pib);\n\t...\n\trcu_assign_pointer(phy->pib, pib);\n\tkfree_rcu(pib_old, rcu);\n\nIt assumes the RTNL is held, but ->set_channel is not always called\nunder it: the mac802154 scan worker changes channels via\ndrv_set_channel() without the RTNL. Such an update can race an\nRTNL-held one on the same phy; both read the same pib_old and both\nkfree_rcu() it, double-freeing the object. With SLUB percpu sheaves\nbatching kfree_rcu(), this surfaces as a KASAN invalid-free in\nrcu_free_sheaf().\n\nstruct hwsim_phy has no lock for pib. Add one and make the swap atomic\nwith rcu_replace_pointer() under it, dropping the misleading\nrtnl_dereference().","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871","https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1","https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f","https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3","https://git.kernel.org/stable/c/e3b4681197aa026bd2d79358de5a3d62b76b04b9"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-97599","score":0.002,"percentile":0.09711,"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."]}