CVE-2026-39835

CVE Details

Release Date:2026-05-22
Impact:Important What is this?

Description


SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

See more information about CVE-2026-39835 from MITRE CVE dictionary and NIST NVD


NOTE: The following CVSS metrics and score provided are preliminary and subject to review.


CVSS v3 metrics

Base Score: 7.5
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 10 (buildah) ELSA-2026-361992026-07-22
Oracle Linux version 10 (podman) ELSA-2026-370722026-07-23
Oracle Linux version 8 (aardvark-dns) ELSA-2026-385042026-07-15
Oracle Linux version 8 (buildah) ELSA-2026-385042026-07-15
Oracle Linux version 8 (cockpit-podman) ELSA-2026-385042026-07-15
Oracle Linux version 8 (conmon) ELSA-2026-385042026-07-15
Oracle Linux version 8 (container-selinux) ELSA-2026-385042026-07-15
Oracle Linux version 8 (containernetworking-plugins) ELSA-2026-385042026-07-15
Oracle Linux version 8 (containers-common) ELSA-2026-385042026-07-15
Oracle Linux version 8 (criu) ELSA-2026-385042026-07-15
Oracle Linux version 8 (crun) ELSA-2026-385042026-07-15
Oracle Linux version 8 (fuse-overlayfs) ELSA-2026-385042026-07-15
Oracle Linux version 8 (libslirp) ELSA-2026-385042026-07-15
Oracle Linux version 8 (netavark) ELSA-2026-385042026-07-15
Oracle Linux version 8 (oci-seccomp-bpf-hook) ELSA-2026-385042026-07-15
Oracle Linux version 8 (podman) ELSA-2026-385042026-07-15
Oracle Linux version 8 (python-podman) ELSA-2026-385042026-07-15
Oracle Linux version 8 (runc) ELSA-2026-385042026-07-15
Oracle Linux version 8 (skopeo) ELSA-2026-385042026-07-15
Oracle Linux version 8 (slirp4netns) ELSA-2026-385042026-07-15
Oracle Linux version 8 (udica) ELSA-2026-385042026-07-15
Oracle Linux version 9 (buildah) ELSA-2026-374102026-07-10
Oracle Linux version 9 (podman) ELSA-2026-371232026-07-10


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