Denial of Service via integer underflow in AES-GCM cipher negotiation
Summary
Denial of Service via integer underflow in AES-GCM cipher negotiation. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-125. Red Hat lists fixing advisory RHSA-2026:46927 with package libssh2-main-1.11.1-10.2.hum1.
What this means
In plain English
Denial of Service via integer underflow in AES-GCM cipher negotiation. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-125. Red Hat lists fixing advisory RHSA-2026:46927 with package libssh2-main-1.11.1-10.2.hum1. Successful exploitation can interrupt the affected service or exhaust resources, reducing availability until the component recovers.
Recommended action
Primary action: update to a vendor-listed fixed release: libssh2-main-1.11.1-10.2.hum1, RHSA-2026:46927.
Rewritten locally from the scraped official advisory data above; no generative API is used. The vendor advisory is authoritative.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- libssh2-main-1.11.1-10.2.hum1
- RHSA-2026:46927
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
Upgrade to a fixed release: libssh2-main-1.11.1-10.2.hum1, RHSA-2026:46927. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Discussion(0)
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