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…
Medium CVSS 6.5
Summary
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.
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://access.redhat.com/errata/RHSA-2026:42922 Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-59843 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2498176 Issue Tracking
Timeline
- nvd_ingest NVD