CVE-2026-97599

{"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": "2026-10-30T12:37:33.925Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:37:33.925Z"}, "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": "8f44a61f816581c35c1974c8c1a3b3c2c49e96be", "status": "affected", "versionType": "git"}, {"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": "6.1.191", "lessThanOrEqual": "6.1.*", "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"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.1.191"}, {"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"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8f44a61f816581c35c1974c8c1a3b3c2c49e96be"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "8f44a61f816581c35c1974c8c1a3b3c2c49e96be", "status": "affected", "version": "f25da51fdc381ca2863248c7060b3662632f0872", "versionType": "git"}, {"lessThan": "e3b4681197aa026bd2d79358de5a3d62b76b04b9", "status": "affected", "version": "f25da51fdc381ca2863248c7060b3662632f0872", "versionType": "git"}, {"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": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()."}], "id": "CVE-2026-97599", "lastModified": "2026-10-30T13:21:09.240", "metrics": {}, "published": "2026-09-25T11:17:11.243", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f44a61f816581c35c1974c8c1a3b3c2c49e96be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3b4681197aa026bd2d79358de5a3d62b76b04b9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ieee802154: hwsim: serialize pib updates to fix double-free", "id": "2541242", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541242"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1341", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nieee802154: hwsim: serialize pib updates to fix double-free\nhwsim_update_pib() does an unserialized read-swap-free of phy->pib:\npib_old = rtnl_dereference(phy->pib);\n...\nrcu_assign_pointer(phy->pib, pib);\nkfree_rcu(pib_old, rcu);\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().\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().", "A flaw was found in the Linux kernel's IEEE 802.15.4 hardware simulator driver. A lack of proper locking allows concurrent channel updates to race against each other when modifying simulated device configuration parameters. A local user could exploit this flaw to cause a double-free memory corruption condition, leading to a Denial of Service (DoS) through a system crash."], "name": "CVE-2026-97599", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97599\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97599\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97599.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f25da51fdc381ca2863248c7060b3662632f0872,9973b3a67a7592a780ea12b08334539a900deec1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f25da51fdc381ca2863248c7060b3662632f0872,d3b8f264ce09573aededd0a97dc41c8147797d8f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f25da51fdc381ca2863248c7060b3662632f0872,db6442deecb1f13aeaf4f9d77746ea7555630fb3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f25da51fdc381ca2863248c7060b3662632f0872,979d5b8de8ed4e1f997aef12da5694b99be7b871)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T13:45:18.891356+00:00", "updated": "2026-10-01T12:15:05.361571+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}