CVE-2026-64372

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-64372

Key Details

CVE	CVE-2026-64372
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

cpufreq: pcc: fix use-after-free and double free in _OSC evaluation

pcc_cpufreq_do_osc() calls acpi_evaluate_object() twice for the

two-phase _OSC negotiation. Between the two calls it freed

output.pointer but left output.length unchanged. Since

acpi_evaluate_object() treats a non-zero length with a non-NULL

pointer as an existing buffer to write into, the second call wrote

into freed memory (use-after-free). The subsequent kfree(output.pointer)

at out_free then freed the same pointer a second time (double free).

Reset output.pointer to NULL and output.length to ACPI_ALLOCATE_BUFFER

after freeing the first result, so ACPICA allocates a fresh buffer for

each phase independently. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64372
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64372

Source

Reference

NVD

CVE