152 lines
6.3 KiB
JSON
152 lines
6.3 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-2026-58087",
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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": "2026-06-29T01:40:17.498Z",
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"datePublished": "2026-08-19T07:47:50.665Z",
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"dateUpdated": "2026-08-20T03:55:43.754Z"
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},
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"containers": {
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"cna": {
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"datePublic": "2026-07-29T22:40:00.000Z",
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"title": "Heap out-of-bounds access in semctl(2)",
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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-26:54.sysvsem.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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"sysvsem"
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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": "p2"
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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": "p12"
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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": "p8"
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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": "Maik Muench of Secfault Security"
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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 GETALL and SETALL commands in semctl(2) recorded the number of semaphores in the target set, dropped the lock protecting the set, allocated a buffer sized for that count, and reacquired the lock. A sequence-number check was used to verify that the set had not been replaced in the interim, but the sequence number wraps after 0x8000 create/destroy cycles. By rapidly destroying and recreating semaphore sets at the same index, another process can cause the sequence number to wrap, allowing a set with a different number of semaphores to pass validation. The subsequent copy then reads or writes past the end of the allocated buffer.\n\nAn unprivileged local user can trigger out-of-bounds reads and writes on kernel heap memory, potentially leading to privilege escalation."
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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-191",
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"description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
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"lang": "en",
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"type": "CWE"
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},
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{
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"cweId": "CWE-125",
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"description": "CWE-125: Out-of-bounds Read",
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"lang": "en",
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"type": "CWE"
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},
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{
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"cweId": "CWE-787",
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"description": "CWE-787: Out-of-bounds Write",
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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": "2026-08-19T07:47:50.665Z"
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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": 7.8,
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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:N/UI:R/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "REQUIRED",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "HIGH"
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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": "2026-08-19T00:00:00+00:00",
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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": "total"
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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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"id": "CVE-2026-58087"
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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": "2026-08-20T03:55:43.754Z"
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}
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}
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]
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}
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} |