CVE-2026-89606

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89606

Key Details

CVE	CVE-2026-89606
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
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:

ecryptfs: reject too-small tag 70 packets

ecryptfs_parse_tag_70_packet() subtracts fixed metadata fields from the

parsed packet body size to derive the encrypted filename size. A

malformed packet with a body smaller than those fixed fields can underflow

that size calculation.

Reject tag 70 packets before the subtraction unless the body contains the

signature, cipher code, and at least one byte of encrypted filename data. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89606
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89606

Source

Reference

NVD

CVE