[GHSA] GHSA-2vh6-hw4j-32ww (medium) — gix-packetline: reachable panic on empty side-band packet (pre-auth network DoS)

GHSA-2vh6-hw4j-32ww Severity: medium CVE: None

gix-packetline: reachable panic on empty side-band packet (pre-auth network DoS)

### Summary `gix-packetline` panics when it receives a side-band packet line that contains only the band-id byte with an empty payload. A malicious Git server - or any remote a victim clones/fetches from - can abort the `gix` client process during a normal fetch. This i