USN-8723-1: SPICE vdagent vulnerabilities

It was discovered that SPICE vdagent had an integer overflow in the buffer size calculation used when writing to the daemon socket. A malicious or compromised SPICE host could possibly use this issue to cause SPICE vdagent to crash, resulting in a denial of service. (CVE-2026-57965) It was discovered that SPICE vdagent did not properly sanitize filenames provided by the SPICE host during file transfers.