146 lines
5.9 KiB
JSON
146 lines
5.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-49421",
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"assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
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"state": "PUBLISHED",
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"assignerShortName": "freebsd",
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"dateReserved": "2026-05-29T20:24:28.616Z",
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"datePublished": "2026-08-19T05:25:43.003Z",
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"dateUpdated": "2026-08-26T17:44:13.985Z"
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},
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"containers": {
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"cna": {
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"datePublic": "2026-06-30T20:00:00.000Z",
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"title": "unlinkat(2) ignores AT_RESOLVE_BENEATH flag",
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"references": [
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:42.unlinkat.asc"
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}
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],
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"affected": [
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{
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"defaultStatus": "unknown",
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"modules": [
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"libalias"
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],
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"product": "FreeBSD",
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"vendor": "FreeBSD",
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"versions": [
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{
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"status": "affected",
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"versionType": "release",
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"version": "15.1-RELEASE",
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"lessThan": "p1"
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},
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{
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"status": "affected",
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"versionType": "release",
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"version": "15.0-RELEASE",
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"lessThan": "p11"
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},
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{
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"status": "affected",
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"versionType": "release",
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"version": "14.4-RELEASE",
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"lessThan": "p7"
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},
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{
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"status": "affected",
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"versionType": "release",
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"version": "14.3-RELEASE",
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"lessThan": "p16"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Yuxiang Yang, Yizhou Zhao, Ao Wang, Xuewei Feng, Qi Li, and Ke Xu from Tsinghua University using GLM-5.1 from Z.ai"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "The kernel function that implements unlinkat(2) and funlinkat(2) validated the AT_RESOLVE_BENEATH flag but failed to pass it through to the underlying path lookup. The flag was silently dropped, so path resolution was not actually restricted.\n\nA process that uses AT_RESOLVE_BENEATH with unlinkat(2) or funlinkat(2) to confine path resolution can in fact resolve paths above the starting directory. A caller relying on this flag for path containment may delete files outside the intended directory tree."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-273",
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"description": "CWE-273: Improper Check for Dropped Privileges",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
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"shortName": "freebsd",
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"dateUpdated": "2026-08-19T05:25:43.003Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.1,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-26T17:44:11.280156Z",
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"id": "CVE-2026-49421",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-26T17:44:13.985Z"
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}
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}
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]
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}
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} |