157 lines
6.7 KiB
JSON
157 lines
6.7 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-2026-46655",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-15T20:11:54.585Z",
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"datePublished": "2026-09-18T16:46:34.832Z",
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"dateUpdated": "2026-09-23T19:15:05.093Z"
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},
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"containers": {
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"cna": {
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"title": "virtio-win: Integer overflow causing a heap overflow in Viosock driver",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-122",
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"lang": "en",
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"description": "CWE-122: Heap-based Buffer Overflow",
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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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"descriptions": [
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{
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"cweId": "CWE-190",
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"lang": "en",
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"description": "CWE-190: Integer Overflow or Wraparound",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 7.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh"
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},
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{
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"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1568",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1568"
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},
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{
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"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/commit/c6bef93d7909584bbda4e5c87603ea175825f342",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/commit/c6bef93d7909584bbda4e5c87603ea175825f342"
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},
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{
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"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/releases/tag/mm320",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/releases/tag/mm320"
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}
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],
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"affected": [
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{
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"vendor": "virtio-win",
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"product": "kvm-guest-drivers-windows",
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"versions": [
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{
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"version": ">= mm210, < mm320",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-18T16:46:50.352Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "virtio-win provides Windows paravirtualized drivers for QEMU and KVM. From mm210 until mm320, the Viosock driver permits a low-privilege local process to submit an IOCTL_SELECT request with attacker-controlled VIRTIO_VSOCK_SELECT.Fdss[*].fd_count values that overflow the 32-bit sum used by VIOSockSelect for bounds checking. The wrapped sum can pass the FD_SETSIZE check even though an individual descriptor count is much larger than the expected limit. VIOSockSelectCopyFds then iterates using the unchecked count and writes beyond the allocated pPkt->Fds array in the NonPagedPool kernel heap. Successful exploitation can corrupt kernel memory and enable privilege escalation in a Windows guest running the driver. This issue is fixed in mm320."
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}
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],
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"source": {
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"advisory": "GHSA-qrhp-4mhp-hjwh",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-23T19:14:57.635548Z",
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"id": "CVE-2026-46655",
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"options": [
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{
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"Exploitation": "poc"
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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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}
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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": "2026-09-23T19:15:05.093Z"
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}
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}
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]
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}
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} |