CVE-2026-56289: Loop with Unreachable Exit Condition

GNU patch is vulnerable to a denial of service DoS due to improper validation of hunk single block of changes in diff line offsets in unified-diff input. A specially crafted patch can specify an extremely large line number, causing the application to enter an effectively infinite processing loop...

CVE-2026-56288: NULL Pointer Dereference

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...

CVE-2026-56288

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...

PT-2026-56776

Name of the Vulnerable Software and Affected Versions GNU patch affected versions not specified Description Improper validation of hunk line offsets in unified-diff input allows a denial of service DoS. A hunk is a single block of changes within a diff file. By supplying a specially crafted patch...