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vuln-cve/data/2026/39xxx/CVE-2026-39314.json
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{
"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": "2026-06-23T15:51:28.925Z"
},
"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": "2026-06-23T15:51:28.925Z"
}
}
]
}
}