CVE-2026-56288

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Source
https://cve.org/CVERecord?id=CVE-2026-56288
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56288.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56288
Downstream
AZL (1)
CLSA (2)
DEBIAN (1)
ECHO (1)
JLSEC (1)
MGASA (1)
OESA (1)
openSUSE (2)
RHSA (1)
SUSE (6)
UBUNTU (1)
Related
openSUSE (2)
SUSE (6)
Published
2026-07-09T09:29:07Z
Modified
2026-10-27T02:47:30Z
Severity
  • 4.6 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
NULL Pointer Dereference in GNU patch
Details

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

Database specific 
{
    "cna_assigner":  "CERT-PL",
    "cwe_ids":  [
        "CWE-476"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56288.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "last_affected":  "2.8.0"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / cgit.git.savannah.gnu.org/cgit/patch.git

Affected ranges

Type
GIT
Repo
https://cgit.git.savannah.gnu.org/cgit/patch.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e6d6a4e021660679d7fc9150f981d4920f722313
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "fixed":  "e6d6a4e021660679d7fc9150f981d4920f722313"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56288.json"