GNU patch is vulnerable to a NULL pointer dereference when processing a specially crafted unified-diff patch file. Improper handling of consecutive end-of-file newline markers can corrupt internal hunk (single block of changes in diff) data structures, causing the application to pass a NULL pointer to fwrite() during patch processing. An attacker can trigger this condition with a malicious patch file, causing the utility to crash and resulting in a denial of service.
This issue has been fixed in the commit e6d6a4e021660679d7fc9150f981d4920f722313
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ibm Aix | — | Apply the fix or workaround for rpm_advisory5 | Oct 15, 2026 | Oct 12, 2026 |
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