---
id: CVE-2026-22992
title: 'libceph: return the handler error from mon_handle_auth_done()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  libceph: return the handler error from mon_handle_auth_done()

  Currently any error from ceph_auth_handle_reply_done() is propagated
  via finish_auth() but isn't returned…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    77229551f2cf72f3e35636db68e6a825b912cf16
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    33908769248b38a5e77cf9292817bb28e641992d
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    e097cd858196b1914309e7e3d79b4fa79383754d
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    d2c4a5f6996683f287f3851ef5412797042de7f1
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    9e0101e57534ef0e7578dd09608a6106736b82e5
  - >-
    Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 <
    e84b48d31b5008932c0a0902982809fbaa1d3b70
  - Linux 5.11
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-06-16T20:37:25.414286Z'
published: '2026-01-23'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:44:30.832Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-22992'
references:
  - url: 'https://git.kernel.org/stable/c/77229551f2cf72f3e35636db68e6a825b912cf16'
  - url: 'https://git.kernel.org/stable/c/33908769248b38a5e77cf9292817bb28e641992d'
  - url: 'https://git.kernel.org/stable/c/e097cd858196b1914309e7e3d79b4fa79383754d'
  - url: 'https://git.kernel.org/stable/c/d2c4a5f6996683f287f3851ef5412797042de7f1'
  - url: 'https://git.kernel.org/stable/c/9e0101e57534ef0e7578dd09608a6106736b82e5'
  - url: 'https://git.kernel.org/stable/c/e84b48d31b5008932c0a0902982809fbaa1d3b70'
tags:
  - cve.org
epss: 0.00315
epssPercentile: 0.24667
ingestedAt: '2026-09-08T15:33:26.994Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

libceph: return the handler error from mon_handle_auth_done()

Currently any error from ceph_auth_handle_reply_done() is propagated
via finish_auth() but isn't returned from mon_handle_auth_done().  This
results in higher layers learning that (despite the monitor considering
us to be successfully authenticated) something went wrong in the
authentication phase and reacting accordingly, but msgr2 still trying
to proceed with establishing the session in the background.  In the
case of secure mode this can trigger a WARN in setup_crypto() and later
lead to a NULL pointer dereference inside of prepare_auth_signature().

## Affected

- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < 77229551f2cf72f3e35636db68e6a825b912cf16`
- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < 33908769248b38a5e77cf9292817bb28e641992d`
- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < e097cd858196b1914309e7e3d79b4fa79383754d`
- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < d2c4a5f6996683f287f3851ef5412797042de7f1`
- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < 9e0101e57534ef0e7578dd09608a6106736b82e5`
- `Linux >= cd1a677cad994021b19665ed476aea63f5d54f31 < e84b48d31b5008932c0a0902982809fbaa1d3b70`
- `Linux 5.11`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.