CVE-2026-74646

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74646

Key Details

CVE	CVE-2026-74646
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: take fl->lock when moving mmaps on interrupted invoke

When an invoke is interrupted by a signal,

wait_for_completion_interruptible() returns -ERESTARTSYS and

fastrpc_internal_invoke() moves every buffer from fl->mmaps onto

cctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk

runs without holding fl->lock, the lock that serialises fl->mmaps in

fastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.

Take fl->lock around the move, matching every other fl->mmaps accessor. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74646
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74646

Source

Reference

NVD

CVE