CVE-2026-68155

kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps

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Severity

Moderate

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · October 30, 2026

Description

A flaw was found in the libceph component of the Linux kernel. A remote attacker could send a specially crafted monitor map (monmap) that advertises zero monitors. This malformed monmap is incorrectly processed as valid, which can lead to a client crash when attempting to open a session. This vulnerability results in a Denial of Service (DoS) for the client.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

CWE-617 · Reachable Assertion