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Fix opaque panic when ingesting an invalid tar file.

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Use PUT to upload the following tar file (`unzstd | base64 -d`):

KLUv/QRY7QIAcoQOFLCnDQ0QaaURkYASyN1LJveuZAKkXivfoQMXZ5MhIGJAXHUWHclJufKB
PLvNDSbmD81Htf9W1f/3BgsA/QPwwAuojAHiDA8mpAEqhsJB8IUcTATEusLVn0AbU7ZnkA==

After this commit it should no longer crash the handler.

V12-Ref: F-77219
This commit is contained in:
Catherine
2026-05-30 14:04:10 +00:00
parent 970806ab4a
commit c8dba5dcb5
1 changed files with 2 additions and 2 deletions
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src/extract.go
+2 -2
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@@ -124,10 +124,10 @@ func ExtractTar(ctx context.Context, reader io.Reader, oldManifest *Manifest) (*
dataBytesTransferred += int64(len(header.Linkname)) // actual symlink
}
case tar.TypeLink:
if entry, found := hardLinks[header.Linkname]; found {
if entry, found := hardLinks[header.Linkname]; found && entry != nil {
manifest.Contents[fileName] = entry
} else {
AddProblem(manifest, fileName, "tar: invalid hardlink %q", header.Linkname)
AddProblem(manifest, fileName, "tar: invalid hardlink to %q", header.Linkname)
}
case tar.TypeDir:
AddDirectory(manifest, fileName)