{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39314", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-06T19:31:07.266Z", "datePublished": "2026-04-07T16:59:23.808Z", "dateUpdated": "2026-04-07T18:34:19.683Z"}, "containers": {"cna": {"title": "CUPS has an integer underflow in `_ppdCreateFromIPP` causes root cupsd crash via negative `job-password-supported`", "problemTypes": [{"descriptions": [{"cweId": "CWE-191", "lang": "en", "description": "CWE-191: Integer Underflow (Wrap or Wraparound)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7"}], "affected": [{"vendor": "OpenPrinting", "product": "cups", "versions": [{"version": "<= 2.4.16", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-07T16:59:23.808Z"}, "descriptions": [{"lang": "en", "value": "OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's Restart=on-failure, an attacker can repeat the crash for sustained denial of service."}], "source": {"advisory": "GHSA-pp8w-2g52-7vj7", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-07T18:34:10.694006Z", "id": "CVE-2026-39314", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-07T18:34:19.683Z"}}]}}

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{"bugzilla": {"description": "cups: CUPS: Denial of Service via integer underflow in IPP attribute handling", "id": "2456107", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456107"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-191", "details": ["A flaw was found in CUPS, an open-source printing system. An unprivileged local user can exploit an integer underflow vulnerability by providing a negative job-password-supported Internet Printing Protocol (IPP) attribute. This manipulation causes the cupsd root process to crash, which can be repeatedly triggered to achieve a sustained Denial of Service (DoS) on the system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-39314", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-04-07T16:59:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-39314\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-39314\nhttps://github.com/OpenPrinting/cups/security/advisories/GHSA-pp8w-2g52-7vj7"], "statement": "This Moderate impact vulnerability in CUPS allows an unprivileged local user to trigger a denial of service by providing a specially crafted IPP attribute. This can repeatedly crash the `cupsd` root process, leading to a sustained denial of service on Red Hat Enterprise Linux systems where CUPS is enabled.", "threat_severity": "Moderate"}