CVE-2026-74647

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74647

Key Details

CVE	CVE-2026-74647
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-14
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

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:

misc: fastrpc: Remove buffer from list prior to unmap operation

fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is

getting removed from the list after it is unmapped from DSP. This can

create potential race conditions if multiple threads invoke unmap

concurrently, where one thread may remove the entry from the list while

another thread's unmap operation is still ongoing.

Fix this by removing the buffer entry from the list before calling the

unmap operation. If the unmap fails, the entry is re-added to the list

so that userspace can retry the unmap, or alternatively, the buffer

will be cleaned up during device release when the DSP process is torn

down and all DSP-side mappings are freed along with remaining buffers

in the list. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74647
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74647

Source

Reference

NVD

CVE