libceph: return the handler error from mon_handle_auth_done()

Summary

CVECVE-2026-22992
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-23 16:15:55 UTC
Updated2026-04-27 14:16:28 UTC
DescriptionIn 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().

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-476


VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 77229551f2cf72f3e35636db68e6a825b912cf16 git Not specified
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 33908769248b38a5e77cf9292817bb28e641992d git Not specified
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 e097cd858196b1914309e7e3d79b4fa79383754d git Not specified
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 d2c4a5f6996683f287f3851ef5412797042de7f1 git Not specified
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 9e0101e57534ef0e7578dd09608a6106736b82e5 git Not specified
CNA Linux Linux affected cd1a677cad994021b19665ed476aea63f5d54f31 e84b48d31b5008932c0a0902982809fbaa1d3b70 git Not specified
CNA Linux Linux affected 5.11 Not specified
CNA Linux Linux unaffected 5.11 semver Not specified
CNA Linux Linux unaffected 5.15.198 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.161 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.121 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.66 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.6 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d2c4a5f6996683f287f3851ef5412797042de7f1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/77229551f2cf72f3e35636db68e6a825b912cf16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/33908769248b38a5e77cf9292817bb28e641992d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e84b48d31b5008932c0a0902982809fbaa1d3b70 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9e0101e57534ef0e7578dd09608a6106736b82e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e097cd858196b1914309e7e3d79b4fa79383754d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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