Unrated
qemu, qemu-hwe — security advisory
hw/uefi: verify pio_xfer_offset before calculating buffer checksum
- Products
- qemu, qemu-hwe
- Affected versions
- 1:10.0.2+ds-1ubuntu1, 1:10.0.2+ds-1ubuntu2, 1:10.1.0+ds-1ubuntu1, 1:10.1.0+ds-5ubuntu1, 1:10.1.0+ds-5ubuntu2, 1:10.1.0+ds-5ubuntu2.1, 1:10.1.0+ds-5ubuntu2.2, 1:10.1.0+ds-5ubuntu2.4, 1:10.1.0+ds-5ubuntu2.5, 1:10.1.0+ds-5ubuntu2.6, 1:10.1.0+ds-5ubuntu2.7, 1:10.1.0+ds-5ubuntu3, 1:10.1.0+ds-5ubuntu4, 1:10.1.0+ds-5ubuntu5, 1:10.2.1+ds-1ubuntu1, 1:10.2.1+ds-1ubuntu2, 1:10.2.1+ds-1ubuntu3, 1:10.2.1+ds-1ubuntu3.1, 1:10.2.1+ds-1ubuntu3.2, 1:10.2.1+ds-1ubuntu3.3, 1:10.2.1+ds-1ubuntu4, 1:10.2.1+ds-1ubuntu4.2, 1:10.2.1+ds-1ubuntu4.3, 1:10.2.1+ds-1ubuntu4.4, 1:10.2.1+ds-1ubuntu6, 1:10.2.1+ds-1ubuntu7, 1:10.2.1+ds-1ubuntu8, 1:11.0.3+ds-2ubuntu1, 1:11.0.3+ds-2ubuntu2, 1:11.0.3+ds-2ubuntu4, 1:9.2.1+ds-1ubuntu5
- Fixed versions
- Not specified
- CVEs
- CVE-2026-41436
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 19:35 UTC · Revision 1
Source evidence
hw/uefi: verify pio_xfer_offset before calculating buffer checksum
osv:UBUNTU-CVE-2026-41436
qemu
Fixed versions: Not specified
qemu
Fixed versions: Not specified
qemu-hwe
Fixed versions: Not specified
qemu
Fixed versions: Not specified
qemu-hwe
Fixed versions: Not specified
Complete source record
{
"id": "e7f9a3f9a98bc6072dd608bee3922aa5d3d18d46d4bd5acfae67c34b516206cc",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-41436",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-41436",
"summary": "hw/uefi: verify pio_xfer_offset before calculating buffer checksum",
"evidence": "osv:UBUNTU-CVE-2026-41436",
"products": [
{
"name": {
"value": "qemu",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:9.2.1+ds-1ubuntu5",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.0.2+ds-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.0.2+ds-1ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.1",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.2",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.4",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.5",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.6",
"evidence": "/affected/0/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu2.7",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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},
"prerequisites": [],
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"affected_versions": [
{
"value": "1:10.2.1+ds-1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu6",
"evidence": "/affected/1/versions"
},
{
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},
{
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}
]
},
{
"name": {
"value": "qemu-hwe",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:10.2.1+ds-1ubuntu4",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu7",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu8",
"evidence": "/affected/2/versions"
},
{
"value": "1:11.0.3+ds-2ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "1:11.0.3+ds-2ubuntu4",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:10.1.0+ds-5ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu3",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu4",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.1.0+ds-5ubuntu5",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu3",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu3.1",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu3.2",
"evidence": "/affected/3/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu3.3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "qemu-hwe",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:10.2.1+ds-1ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu4",
"evidence": "/affected/4/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu4.2",
"evidence": "/affected/4/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu4.3",
"evidence": "/affected/4/versions"
},
{
"value": "1:10.2.1+ds-1ubuntu4.4",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "unknown",
"structured": {
"id": "UBUNTU-CVE-2026-41436",
"aliases": [
"UBUNTU-CVE-2026-41436"
],
"metrics": [
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "qemu",
"purl": "pkg:deb/ubuntu/qemu?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1:9.2.1+ds-1ubuntu5",
"1:10.0.2+ds-1ubuntu1",
"1:10.0.2+ds-1ubuntu2",
"1:10.1.0+ds-1ubuntu1",
"1:10.1.0+ds-5ubuntu1",
"1:10.1.0+ds-5ubuntu2",
"1:10.1.0+ds-5ubuntu2.1",
"1:10.1.0+ds-5ubuntu2.2",
"1:10.1.0+ds-5ubuntu2.4",
"1:10.1.0+ds-5ubuntu2.5",
"1:10.1.0+ds-5ubuntu2.6",
"1:10.1.0+ds-5ubuntu2.7"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41436.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "qemu-block-extra",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-block-supplemental",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-guest-agent",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-arm",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-common",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-data",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-gui",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-mips",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-misc",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-modules-opengl",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-modules-spice",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-ppc",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-riscv",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-s390x",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-sparc",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-x86",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-x86-xen",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-system-xen",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-user",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-user-binfmt",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
},
{
"binary_name": "qemu-utils",
"binary_version": "1:10.1.0+ds-5ubuntu2.7"
}
]
}
},
{
"ranges": [
{
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{
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}
]
}
],
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},
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"1:11.0.3+ds-2ubuntu2"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
"binary_name": "qemu-system-modules-spice",
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},
{
"binary_name": "qemu-system-ppc",
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{
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},
{
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},
{
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},
{
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},
{
"binary_name": "qemu-system-x86-xen",
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},
{
"binary_name": "qemu-system-xen",
"binary_version": "1:11.0.3+ds-2ubuntu2"
},
{
"binary_name": "qemu-user",
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},
{
"binary_name": "qemu-user-binfmt",
"binary_version": "1:11.0.3+ds-2ubuntu2"
},
{
"binary_name": "qemu-utils",
"binary_version": "1:11.0.3+ds-2ubuntu2"
},
{
"binary_name": "ubuntu-virt",
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
]
}
],
"package": {
"name": "qemu-hwe",
"purl": "pkg:deb/ubuntu/qemu-hwe?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
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"1:10.2.1+ds-1ubuntu7",
"1:10.2.1+ds-1ubuntu8",
"1:11.0.3+ds-2ubuntu2",
"1:11.0.3+ds-2ubuntu4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41436.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "qemu-block-extra-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-block-supplemental-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-guest-agent-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-arm-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-common-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-data-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-gui-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-mips-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-misc-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-modules-opengl-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-modules-spice-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-ppc-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-riscv-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-s390x-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-sparc-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-x86-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-x86-xen-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-system-xen-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-user-binfmt-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-user-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "qemu-utils-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "ubuntu-helper-virt-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
},
{
"binary_name": "ubuntu-virt-hwe",
"binary_version": "1:11.0.3+ds-2ubuntu4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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}
]
}
],
"package": {
"name": "qemu",
"purl": "pkg:deb/ubuntu/qemu?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"1:10.1.0+ds-5ubuntu3",
"1:10.1.0+ds-5ubuntu4",
"1:10.1.0+ds-5ubuntu5",
"1:10.2.1+ds-1ubuntu1",
"1:10.2.1+ds-1ubuntu2",
"1:10.2.1+ds-1ubuntu3",
"1:10.2.1+ds-1ubuntu3.1",
"1:10.2.1+ds-1ubuntu3.2",
"1:10.2.1+ds-1ubuntu3.3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41436.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "qemu-block-extra",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-block-supplemental",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-guest-agent",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-arm",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-common",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-data",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-gui",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-mips",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-misc",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-modules-opengl",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-modules-spice",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-ppc",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-riscv",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-s390x",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-sparc",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-x86",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-x86-xen",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-system-xen",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-user",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-user-binfmt",
"binary_version": "1:10.2.1+ds-1ubuntu3.3"
},
{
"binary_name": "qemu-utils",
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},
{
"binary_name": "ubuntu-virt",
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "qemu-hwe",
"purl": "pkg:deb/ubuntu/qemu-hwe?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"1:10.2.1+ds-1ubuntu4",
"1:10.2.1+ds-1ubuntu4.2",
"1:10.2.1+ds-1ubuntu4.3",
"1:10.2.1+ds-1ubuntu4.4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41436.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "qemu-block-extra-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-block-supplemental-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-guest-agent-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-arm-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-common-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-data-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-gui-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-mips-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-misc-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-modules-opengl-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-modules-spice-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-ppc-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-riscv-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-s390x-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-sparc-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-x86-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-x86-xen-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-system-xen-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-user-binfmt-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-user-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "qemu-utils-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "ubuntu-helper-virt-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
},
{
"binary_name": "ubuntu-virt-hwe",
"binary_version": "1:10.2.1+ds-1ubuntu4.4"
}
]
}
}
],
"modified": "2026-10-22T23:20:14.693261935Z",
"provider": "osv",
"upstream": [
"CVE-2026-41436"
],
"references": [
"https://ubuntu.com/security/CVE-2026-41436",
"https://www.cve.org/CVERecord?id=CVE-2026-41436"
]
},
"related_cves": [
{
"value": "CVE-2026-41436",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410126,
"published_at": "2026-06-02T00:00:00+00:00"
}