{"api_version":"1","generated_at":"2026-10-01T20:32:28+00:00","cve":"CVE-2026-97599","urls":{"html":"https://cve.report/CVE-2026-97599","api":"https://cve.report/api/cve/CVE-2026-97599.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97599","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97599"},"summary":{"title":"ieee802154: hwsim: serialize pib updates to fix double-free","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().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:11","updated_at":"2026-09-25 11:17:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871","name":"https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f","name":"https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3","name":"https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1","name":"https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97599","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97599","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f25da51fdc381ca2863248c7060b3662632f0872 9973b3a67a7592a780ea12b08334539a900deec1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f25da51fdc381ca2863248c7060b3662632f0872 d3b8f264ce09573aededd0a97dc41c8147797d8f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f25da51fdc381ca2863248c7060b3662632f0872 db6442deecb1f13aeaf4f9d77746ea7555630fb3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f25da51fdc381ca2863248c7060b3662632f0872 979d5b8de8ed4e1f997aef12da5694b99be7b871 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97599","cve":"CVE-2026-97599","epss":"0.002000000","percentile":"0.088270000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ieee802154/mac802154_hwsim.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9973b3a67a7592a780ea12b08334539a900deec1","status":"affected","version":"f25da51fdc381ca2863248c7060b3662632f0872","versionType":"git"},{"lessThan":"d3b8f264ce09573aededd0a97dc41c8147797d8f","status":"affected","version":"f25da51fdc381ca2863248c7060b3662632f0872","versionType":"git"},{"lessThan":"db6442deecb1f13aeaf4f9d77746ea7555630fb3","status":"affected","version":"f25da51fdc381ca2863248c7060b3662632f0872","versionType":"git"},{"lessThan":"979d5b8de8ed4e1f997aef12da5694b99be7b871","status":"affected","version":"f25da51fdc381ca2863248c7060b3662632f0872","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ieee802154/mac802154_hwsim.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.19"},{"lessThan":"4.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"4.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"4.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"4.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"4.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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()."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:22:13.606Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1"},{"url":"https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f"},{"url":"https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3"},{"url":"https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871"}],"title":"ieee802154: hwsim: serialize pib updates to fix double-free","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97599","datePublished":"2026-09-25T10:22:13.606Z","dateReserved":"2026-09-24T16:01:01.157Z","dateUpdated":"2026-09-25T10:22:13.606Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:11","lastModifiedDate":"2026-09-25 11:17:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97599","Ordinal":"1","Title":"ieee802154: hwsim: serialize pib updates to fix double-free","CVE":"CVE-2026-97599","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97599","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"ieee802154: hwsim: serialize pib updates to fix double-free"}]}}}