Ubuntu: USN-8927-1: curl vulnerabilities
It was discovered that curl, when built with GnuTLS support, had an out-of-bounds read in the WebSocket send path.
Executive Summary
It was discovered that curl, when built with GnuTLS support, had an out-of-bounds read in the WebSocket send path. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-107928) Maksim discovered that curl did not correctly include the interface binding in connection reuse decisions when CURLOPT_INTERFACE was used. An attacker could possibly use this issue to cause connections to go out from an unintended source address.
Threat Model & Security Vulnerability Assessment
From an offensive security, vulnerability mitigation, and systems audit perspective: - **Exploit Vector Analysis:** Evaluates unprivileged user namespaces, buffer boundaries, or cryptographic flaws. - **Kernel Patch Hardening:** Kernel and compiler level guards (KASLR, CFI, stack canaries) mitigate weaponized exploitation. - **Supply Chain Verification:** Highlights why signed SBOM (Software Bill of Materials) and reproducible builds are mandatory.
Impact on the Open Ecosystem
Immediate patching and independent peer review across the open community safeguard critical internet infrastructure.