{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97599","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-24T16:01:01.157Z","datePublished":"2026-09-25T10:22:13.606Z","dateUpdated":"2026-10-03T11:00:04.267Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-03T11:00:04.267Z"},"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()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ieee802154/mac802154_hwsim.c"],"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ieee802154/mac802154_hwsim.c"],"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-rc3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.3-rc3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e3b4681197aa026bd2d79358de5a3d62b76b04b9"},{"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"}}}}