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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().

PUBLISHED Reserved 2026-01-13 | Published 2026-01-23 | Updated 2026-02-09 | Assigner Linux

Product status

Default status
unaffected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before 77229551f2cf72f3e35636db68e6a825b912cf16
affected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before 33908769248b38a5e77cf9292817bb28e641992d
affected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before e097cd858196b1914309e7e3d79b4fa79383754d
affected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before d2c4a5f6996683f287f3851ef5412797042de7f1
affected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before 9e0101e57534ef0e7578dd09608a6106736b82e5
affected

cd1a677cad994021b19665ed476aea63f5d54f31 (git) before e84b48d31b5008932c0a0902982809fbaa1d3b70
affected

Default status
affected

5.11
affected

Any version before 5.11
unaffected

5.15.198 (semver)
unaffected

6.1.161 (semver)
unaffected

6.6.121 (semver)
unaffected

6.12.66 (semver)
unaffected

6.18.6 (semver)
unaffected

6.19 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/77229551f2cf72f3e35636db68e6a825b912cf16

git.kernel.org/...c/33908769248b38a5e77cf9292817bb28e641992d

git.kernel.org/...c/e097cd858196b1914309e7e3d79b4fa79383754d

git.kernel.org/...c/d2c4a5f6996683f287f3851ef5412797042de7f1

git.kernel.org/...c/9e0101e57534ef0e7578dd09608a6106736b82e5

git.kernel.org/...c/e84b48d31b5008932c0a0902982809fbaa1d3b70

cve.org (CVE-2026-22992)

nvd.nist.gov (CVE-2026-22992)

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