{"id":"CVE-2026-64510","summary":"ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: NFIT: core: Fix acpi_nfit_init() error cleanup\n\nIf acpi_nfit_init() fails after adding the acpi_desc object to the\nacpi_descs list, that object is never removed from that list because\nthe acpi_nfit_shutdown() devm action is not added for the NFIT device\nin that case.  Next, the acpi_nfit_init() failure causes\nacpi_nfit_probe() to fail, the acpi_desc object is freed, and a\ndangling pointer is left behind in the acpi_descs.  Any subsequent\nACPI Machine Check Exception will trigger nfit_handle_mce() which\niterates over acpi_descs and so a use-after-free will occur.\n\nMoreover, if acpi_nfit_probe() returns 0 after installing a notify\nhandler for the NFIT device and without allocating the acpi_desc\nobject and setting the NFIT device's driver data pointer, the\nacpi_desc object will be allocated by acpi_nfit_update_notify()\nand acpi_nfit_init() will be called to initialize it.  Regardless\nof whether or not acpi_nfit_init() fails in that case, the\nacpi_nfit_shutdown() devm action is not added for the NFIT device\nand acpi_desc is never removed from the acpi_descs list.  If the\nacpi_desc object is freed subsequently on driver removal, any\nsubsequent ACPI MCE will lead to a use-after-free like in the\nprevious case.\n\nTo address the first issue mentioned above, make acpi_nfit_probe()\ncall acpi_nfit_shutdown() directly on acpi_nfit_init() failures and\nto address the other one, add a remove callback to the driver and\nmake it call acpi_nfit_shutdown().  Also, since it is now possible to\npass NULL to acpi_nfit_shutdown() or the acpi_desc object passed to it\nmay not have been initialized, add checks against NULL for acpi_desc and\nits nvdimm_bus field to that function and make acpi_nfit_unregister()\nclear the latter after unregistering the NVDIMM bus.","modified":"2026-08-18T03:30:57.537805798Z","published":"2026-07-25T08:52:03.208Z","related":["openSUSE-SU-2026:11476-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64510.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/38bf27511ef41bffebd157ec3eba41fc89ba59cd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ff054cc02a763914773b026cacb429e5fbf64fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d69235bdc581a4346e9bcd6a8bea37d3e1abd25"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c127dbd832bd4b9aef8a749d9f491b74042f9b47"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df7c92216a1583a76cb0cbf2f21cd68870609b05"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee82078e776ae31266cc70fdf62ac17c3c6f100a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64510.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64510"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a61fe6f7902ecaa89d5e6c709490fc4324927134"},{"fixed":"ee82078e776ae31266cc70fdf62ac17c3c6f100a"},{"fixed":"6ff054cc02a763914773b026cacb429e5fbf64fa"},{"fixed":"b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4"},{"fixed":"c127dbd832bd4b9aef8a749d9f491b74042f9b47"},{"fixed":"df7c92216a1583a76cb0cbf2f21cd68870609b05"},{"fixed":"3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa"},{"fixed":"7d69235bdc581a4346e9bcd6a8bea37d3e1abd25"},{"fixed":"38bf27511ef41bffebd157ec3eba41fc89ba59cd"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64510.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.6.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64510.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}