CVE-2026-22992

libceph: return the handler error from mon_handle_auth_done()

State: Published
Severity: 7.5 High
Published: Jan 23, 2026
Updated: Oct 19, 2026
Reserved: Jan 13, 2026

Description

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().

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

Product	Versions
LinuxLinux	cd1a677cad994021b19665ed476aea63f5d54f31 to before 77229551f2cf72f3e35636db68e6a825b912cf16Affected cd1a677cad994021b19665ed476aea63f5d54f31 to before 33908769248b38a5e77cf9292817bb28e641992dAffected cd1a677cad994021b19665ed476aea63f5d54f31 to before e097cd858196b1914309e7e3d79b4fa79383754dAffected cd1a677cad994021b19665ed476aea63f5d54f31 to before d2c4a5f6996683f287f3851ef5412797042de7f1Affected cd1a677cad994021b19665ed476aea63f5d54f31 to before 9e0101e57534ef0e7578dd09608a6106736b82e5Affected cd1a677cad994021b19665ed476aea63f5d54f31 to before e84b48d31b5008932c0a0902982809fbaa1d3b70Affected
LinuxLinux	5.11Affected before 5.11Not affected 5.15.198 through 5.15.Not affected 6.1.161 through 6.1.Not affected 6.6.121 through 6.6.Not affected 6.12.66 through 6.12.Not affected 6.18.6 through 6.18.*Not affected 6.19 and laterNot affected

Product

Versions

LinuxLinux

cd1a677cad994021b19665ed476aea63f5d54f31 to before 77229551f2cf72f3e35636db68e6a825b912cf16Affected
cd1a677cad994021b19665ed476aea63f5d54f31 to before 33908769248b38a5e77cf9292817bb28e641992dAffected
cd1a677cad994021b19665ed476aea63f5d54f31 to before e097cd858196b1914309e7e3d79b4fa79383754dAffected
cd1a677cad994021b19665ed476aea63f5d54f31 to before d2c4a5f6996683f287f3851ef5412797042de7f1Affected
cd1a677cad994021b19665ed476aea63f5d54f31 to before 9e0101e57534ef0e7578dd09608a6106736b82e5Affected
cd1a677cad994021b19665ed476aea63f5d54f31 to before e84b48d31b5008932c0a0902982809fbaa1d3b70Affected

LinuxLinux

5.11Affected
before 5.11Not affected
5.15.198 through 5.15.*Not affected
6.1.161 through 6.1.*Not affected
6.6.121 through 6.6.*Not affected
6.12.66 through 6.12.*Not affected
6.18.6 through 6.18.*Not affected
6.19 and laterNot affected

References

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