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{"acknowledgement": "Red Hat would like to thank Calif.io for reporting this issue.", "bugzilla": {"description": "rpm: Heap-based buffer overflow write in hex2binv() via a mistyped RPMTAG_FILESIGNATURES header tag", "id": "2543866", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543866"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H", "status": "draft"}, "cwe": "CWE-122", "details": ["A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content \u2014 of attacker-chosen length \u2014 past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package."], "mitigation": {"lang": "en:us", "value": "Avoid processing or extracting RPM packages from untrusted or unsigned sources. Do not run rpm -qlvp, rpm2cpio, or rpm2archive against RPM files whose origin and integrity cannot be verified."}, "name": "CVE-2026-103242", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "rpm", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-30T11:00:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-103242\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-103242"], "statement": "This issue is rated Moderate because, while parsing a crafted RPM triggers an attacker-controlled-content, attacker-controlled-length heap write, exploitation is local: a user or automated workflow must choose to run rpm -qlvp, rpm2cpio, or rpm2archive against the untrusted package. The flaw is not exposed as a network service. Testing against the shipped rpm binary demonstrated a reliable crash; no proof-of-concept achieving code execution beyond the crash has been produced.", "threat_severity": "Moderate"}

{"created": "2026-09-30T13:30:17.746974+00:00", "updated": "2026-09-30T13:30:17.746980+00:00", "vendors": []}