CVE-2026-43406

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-43406

Key Details

CVE	CVE-2026-43406
CVSS Score / Version	9.1 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-125 (Out-of-bounds Read)

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:

libceph: prevent potential out-of-bounds reads in process_message_header()

If the message frame is (maliciously) corrupted in a way that the

length of the control segment ends up being less than the size of the

message header or a different frame is made to look like a message

frame, out-of-bounds reads may ensue in process_message_header().

Perform an explicit bounds check before decoding the message header. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-43406
CVE	https://www.cve.org/CVERecord?id=CVE-2026-43406

Source

Reference

NVD

CVE