{"id":"CVE-2026-64510","title":"ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup","summary":"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 f…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < ee82078e776ae31266cc70fdf62ac17c3c6f100a","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 6ff054cc02a763914773b026cacb429e5fbf64fa","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < c127dbd832bd4b9aef8a749d9f491b74042f9b47","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < df7c92216a1583a76cb0cbf2f21cd68870609b05","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 7d69235bdc581a4346e9bcd6a8bea37d3e1abd25","Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 38bf27511ef41bffebd157ec3eba41fc89ba59cd","Linux 4.6"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:41:28.832636Z"},"published":"2026-07-25","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:38.766Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64510","references":[{"url":"https://git.kernel.org/stable/c/ee82078e776ae31266cc70fdf62ac17c3c6f100a"},{"url":"https://git.kernel.org/stable/c/6ff054cc02a763914773b026cacb429e5fbf64fa"},{"url":"https://git.kernel.org/stable/c/b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4"},{"url":"https://git.kernel.org/stable/c/c127dbd832bd4b9aef8a749d9f491b74042f9b47"},{"url":"https://git.kernel.org/stable/c/df7c92216a1583a76cb0cbf2f21cd68870609b05"},{"url":"https://git.kernel.org/stable/c/3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa"},{"url":"https://git.kernel.org/stable/c/7d69235bdc581a4346e9bcd6a8bea37d3e1abd25"},{"url":"https://git.kernel.org/stable/c/38bf27511ef41bffebd157ec3eba41fc89ba59cd"}],"tags":["cve.org"],"epss":0.00111,"epssPercentile":0.0123,"ingestedAt":"2026-10-16T17:24:46.824Z","slug":"CVE-2026-64510","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < ee82078e776ae31266cc70fdf62ac17c3c6f100a`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 6ff054cc02a763914773b026cacb429e5fbf64fa`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < c127dbd832bd4b9aef8a749d9f491b74042f9b47`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < df7c92216a1583a76cb0cbf2f21cd68870609b05`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 7d69235bdc581a4346e9bcd6a8bea37d3e1abd25`\n- `Linux >= a61fe6f7902ecaa89d5e6c709490fc4324927134 < 38bf27511ef41bffebd157ec3eba41fc89ba59cd`\n- `Linux 4.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}