CVE-2026-59843

弱点类型

A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.

受影响产品

• libssh libssh
• redhat hardened_images
• redhat enterprise_linux

参考链接

• https://access.redhat.com/errata/RHSA-2026:42922
• https://access.redhat.com/errata/RHSA-2026:55855
• https://access.redhat.com/errata/RHSA-2026:62217
• https://access.redhat.com/errata/RHSA-2026:62218
• https://access.redhat.com/security/cve/CVE-2026-59843
• https://bugzilla.redhat.com/show_bug.cgi?id=2498176