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Increase icc decompression buffer size

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Andrew 2026-03-28 10:49:48 +13:00
parent 7d52fd66d0
commit ce8bdd0981
1 changed files with 5 additions and 5 deletions
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10
src/headers.rs
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@ -263,11 +263,11 @@ pub fn extract_icc(iccp: &Chunk, max_size: Option<usize>) -> Option<Vec<u8>> {
if compression_method != 0 { if compression_method != 0 {
return None; // The profile is supposed to be compressed (method 0) return None; // The profile is supposed to be compressed (method 0)
} }
// The decompressed size is unknown so we have to guess the required buffer size // Libdeflate works with a fixed size buffer. Since the decompressed size is unknown we have to
let mut out_size = compressed_data.len() * 2 + 1000; // guess the required buffer size. We allow a fairly generous 10x factor with a minimum of 1000.
if let Some(max) = max_size { let mut out_size = (compressed_data.len() * 10).max(1000);
out_size = out_size.min(max); // For sanity, impose a default limit of 1MB.
} out_size = out_size.min(max_size.unwrap_or(1_000_000));
match inflate(compressed_data, out_size) { match inflate(compressed_data, out_size) {
Ok(icc) => Some(icc), Ok(icc) => Some(icc),
Err(e) => { Err(e) => {