uutils/coreutils

dd: Silent Truncate Error Suppression

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#9 745 ouverte le 20 déc. 2025

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U - ddgood first issuereported-canonical

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Description

Component

dd

Description

If the output device is full, read-only, or otherwise unable to be truncated, dd reports success (exit 0) while leaving stale data in the output file.

Impact

Silent data corruption. Backup scripts relying on dd may believe a copy succeeded when it actually contains old/garbage data, leading to undetected data loss during recovery.

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