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betterbinary: prevent binary index overflow by casting the numbers to int (from uint16).

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fiatjaf
2025-08-25 18:01:34 -03:00
parent a581d9677d
commit d345bb3529
1 changed files with 2 additions and 2 deletions
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eventstore/codec/betterbinary/codec.go
+2 -2
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@@ -122,9 +122,9 @@ func Unmarshal(data []byte, evt *nostr.Event) (err error) {
nitems := int(data[tagbase+offset]) nitems := int(data[tagbase+offset])
tag := make(nostr.Tag, nitems) tag := make(nostr.Tag, nitems)
curr := tagbase + offset + 1 curr := int(tagbase + offset + 1)
for i := range tag { for i := range tag {
length := binary.LittleEndian.Uint16(data[curr:]) length := int(binary.LittleEndian.Uint16(data[curr:]))
tag[i] = string(data[curr+2 : curr+2+length]) tag[i] = string(data[curr+2 : curr+2+length])
curr += 2 + length curr += 2 + length
} }