{"schema":"threatline.record/2","record":{"id":"CVE-2026-97599","aliases":[],"summary":"ieee802154: hwsim: serialize pib updates to fix double-free","details":"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().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","source_modified_at":"2026-10-19T09:10:02.984Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"f25da51fdc381ca2863248c7060b3662632f0872","lessThan":"e3b4681197aa026bd2d79358de5a3d62b76b04b9","status":"affected","versionType":"git"},{"version":"f25da51fdc381ca2863248c7060b3662632f0872","lessThan":"9973b3a67a7592a780ea12b08334539a900deec1","status":"affected","versionType":"git"},{"version":"f25da51fdc381ca2863248c7060b3662632f0872","lessThan":"d3b8f264ce09573aededd0a97dc41c8147797d8f","status":"affected","versionType":"git"},{"version":"f25da51fdc381ca2863248c7060b3662632f0872","lessThan":"db6442deecb1f13aeaf4f9d77746ea7555630fb3","status":"affected","versionType":"git"},{"version":"f25da51fdc381ca2863248c7060b3662632f0872","lessThan":"979d5b8de8ed4e1f997aef12da5694b99be7b871","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","source_modified_at":"2026-10-19T09:10:02.984Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","source_modified_at":"2026-10-19T09:10:02.984Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9973b3a67a7592a780ea12b08334539a900deec1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","source_modified_at":"2026-10-19T09:10:02.984Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"979d5b8de8ed4e1f997aef12da5694b99be7b871","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09314,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:22:13.606Z","modified_at":"2026-10-19T09:10:02.984Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:10:02.984Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97599","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/e3b4681197aa026bd2d79358de5a3d62b76b04b9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:10:02.984Z","content_hash":"ffe1059f849f0e28322eca2e9668a34129e6fda4f34cfbea9e0705ce4efd71e2"}}