139 lines
6.2 KiB
JSON
139 lines
6.2 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-2026-102702",
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"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
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"state": "PUBLISHED",
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"assignerShortName": "XEN",
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"dateReserved": "2026-09-29T16:11:40.973Z",
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"datePublished": "2026-10-13T15:45:13.125Z",
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"dateUpdated": "2026-10-20T17:28:13.480Z"
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},
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"containers": {
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"cna": {
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"title": "Arm: multiple issues with GNTTABOP_cache_flush",
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"datePublic": "2026-10-13T12:00:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\n1) XSA-437 (CVE-2023-34321) addressed issues with overflows in\n calculations involved in guests flushing caches through\n GNTTABOP_cache_flush. Unfortunately the fix there introduced a\n calculation which may underflow, resulting in a loop which would - at\n least on 64-bit Arm - take excessively long, and which would likely\n eventually crash the hypervisor.\n\n This is CVE-2026-102699.\n\n2) GNTTABOP_cache_flush may be issued on memory mapped from another\n domain using the grant table interface. However there was no\n restriction to disallow the use of invalidate-without-clean against\n read-only grant mappings, which may corrupt the granted memory.\n\n This is CVE-2026-102702."
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "A malicious unprivileged guest may crash the hypervisor, causing a\nDenial of Service (DoS) affecting the entire host, or corrupt memory\nbelonging to another domain. Privilege escalation and information leaks\ncannot be ruled out."
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}
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]
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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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"product": "Xen",
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"vendor": "Xen",
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"versions": [
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{
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"status": "unknown",
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"version": "consult Xen advisory XSA-519"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"value": "All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and\nearlier are not vulnerable.\n\nOnly Arm systems are vulnerable. x86 systems are not vulnerable."
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "There is no known mitigation."
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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": "CVE-2026-102699 was discovered by Leonid Komarianskyi of EPAM. It was\nlater independently reported by Ayan Kumar Halder of AMD.\n\nCVE-2026-102702 was found by the security team while looking at the\nsurrounding code."
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}
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],
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"references": [
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{
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"url": "https://xenbits.xenproject.org/xsa/advisory-519.html"
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}
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],
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"providerMetadata": {
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"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
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"shortName": "XEN",
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"dateUpdated": "2026-10-13T15:45:13.125Z"
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}
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},
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"adp": [
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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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"type": "CWE",
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"cweId": "CWE-191",
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"lang": "en",
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"description": "CWE-191 Integer Underflow (Wrap or Wraparound)"
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}
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]
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}
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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": 7.5,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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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": "2026-10-20T17:27:31.334256Z",
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"id": "CVE-2026-102702",
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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": "yes"
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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": "2026-10-20T17:28:13.480Z"
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}
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}
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]
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}
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} |