CVE-2026-68154

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68154

Key Details

CVE	CVE-2026-68154
CVSS Score / Version	9.8 (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:H/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 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:

libceph: reject zero bucket types in crush_decode

CRUSH bucket type 0 is reserved for devices. The mapper relies on

that invariant and uses type 0 to identify leaf devices.

If crush_decode() accepts a bucket with type 0, a malformed CRUSH map

can make the mapper treat a negative bucket ID as a device and pass it

to is_out(), which then indexes the OSD weight array with a negative

value.

Reject zero bucket types while decoding the CRUSH map so the invalid

state never reaches the mapper. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68154
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68154

Source

Reference

NVD

CVE