CVE-2026-64511 is a vulnerability in Linux Kernel
Published on July 25, 2026
ACPI: NFIT: core: Fix possible NULL pointer dereference
In the Linux kernel, the following vulnerability has been resolved:
ACPI: NFIT: core: Fix possible NULL pointer dereference
After commit 9b311b7313d6 ("ACPI: NFIT: Install Notify() handler before
getting NFIT table"), acpi_nfit_probe() installs an ACPI notify handler
for the NFIT device before checking the presence of the NFIT table. If
that table is not there, 0 is returned without allocating the acpi_desc
object and setting the driver data pointer of the NFIT device. If the
platform firmware triggers an NFIT_NOTIFY_UC_MEMORY_ERROR notification
on the NFIT device at that point, acpi_nfit_uc_error_notify() will
dereference a NULL pointer.
Prevent that from occurring by adding an acpi_desc check against NULL
to acpi_nfit_uc_error_notify().
Products Associated with CVE-2026-64511
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Affected Versions
Linux:- Version 9b311b7313d6c104dd4a2d43ab54536dce07f960 and below a44343fe230aa48c74ef09830f3c5c90848b257e is affected.
- Version 9b311b7313d6c104dd4a2d43ab54536dce07f960 and below 3c8f73b0fbdf956c98e2329d5aaea3ad09a9cfb6 is affected.
- Version 9b311b7313d6c104dd4a2d43ab54536dce07f960 and below 452945662fd8e9862a2d2043239c7ee1815d1ac4 is affected.
- Version 9b311b7313d6c104dd4a2d43ab54536dce07f960 and below 873576e585da5d0fc5debbab74eed565c0acea99 is affected.
- Version 9b311b7313d6c104dd4a2d43ab54536dce07f960 and below 027e128abb82788189d6d45b68e3e8e7329b67be is affected.
- Version 6.6 is affected.
- Before 6.6 is unaffected.
- Version 6.6.145, <= 6.6.* is unaffected.
- Version 6.12.96, <= 6.12.* is unaffected.
- Version 6.18.39, <= 6.18.* is unaffected.
- Version 7.1.4, <= 7.1.* is unaffected.
- Version 7.2-rc1, <= * is unaffected.