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Merge pull request #918 from Morilli/fix-bzip2-selector-oob

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[bzip2] fix possible out of bounds access due to unsanitized nSelectors usage
This commit is contained in:
Adam Hathcock
2025-06-03 08:11:55 +01:00
committed by GitHub
parent 744e410a1a 619d987492
commit 89a3da14c9
1 changed files with 6 additions and 1 deletions
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7
src/SharpCompress/Compressors/BZip2/CBZip2InputStream.cs
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@@ -542,9 +542,14 @@ internal class CBZip2InputStream : Stream
{
j++;
}
selectorMtf[i] = (char)j;
if (i < BZip2Constants.MAX_SELECTORS)
{
selectorMtf[i] = (char)j;
}
}
nSelectors = Math.Min(nSelectors, BZip2Constants.MAX_SELECTORS);
/* Undo the MTF values for the selectors. */
{
var pos = new char[BZip2Constants.N_GROUPS];