Vulnerabilities

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.

GNU patch is vulnerable to a NULL pointer dereference when processing a specially crafted unified-diff patch file.

An Invalid Pointer vulnerability exists in GNU patch 2.7 via the another_hunk function, which causes a Denial of Service.

GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file.

A Directory Traversal vulnerability exists in the GNU patch before 2.7.4.

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character.

GNU patch through 2.7.6 is vulnerable to OS shell command injection that can be exploited by opening a crafted patch file that contains an ed style diff payload with shell metacharacters.

In GNU patch through 2.7.6, the following of symlinks is mishandled in certain cases other than input files.

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution.

A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6.

An issue was discovered in GNU patch through 2.7.6.

An issue was discovered in GNU patch before 2.7.6.

Directory traversal vulnerability in GNU patch versions which support Git-style patching before 2.7.3 allows remote attackers to write to arbitrary files with the permissions of the target user via a ..

GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fault) via a crafted diff file.

GNU patch 2.7.1 allows remote attackers to write to arbitrary files via a symlink attack in a patch file.