ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db Patch, Third Party Advisory
- https://www.openssh.com/security.html Not Applicable, Vendor Advisory
- https://www.openssh.com/txt/release-8.5 Release Notes, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2021/03/03/1 Mailing List, Patch, Third Party Advisory
- https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db Patch, Third Party Advisory
- https://www.openssh.com/security.html Not Applicable, Vendor Advisory
- https://www.openssh.com/txt/release-8.5 Release Notes, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2021/03/03/1 Mailing List, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.1 · openbsd, fedoraproject, netappNVD modified 2026-10-14 12:17
Affected (CPE criteria) 10
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:hci_storage_node_firmware:-:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:*
References 19
- https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/
- https://security.gentoo.org/glsa/202105-35 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210416-0002/ Third Party Advisory
- https://www.openssh.com/security.html Not Applicable, Vendor Advisory
- https://www.openssh.com/txt/release-8.5 Release Notes, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2021/03/03/1 Mailing List, Patch, Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.html Third Party Advisory
- https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/
- https://security.gentoo.org/glsa/202105-35 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210416-0002/ Third Party Advisory
- https://www.openssh.com/security.html Not Applicable, Vendor Advisory
- https://www.openssh.com/txt/release-8.5 Release Notes, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2021/03/03/1 Mailing List, Patch, Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.html Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html