232 lines
10 KiB
JSON
232 lines
10 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-2021-47255",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-04-10T18:59:19.539Z",
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"datePublished": "2024-05-21T14:19:50.125Z",
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"dateUpdated": "2026-05-11T13:50:57.669Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:50:57.669Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkvm: LAPIC: Restore guard to prevent illegal APIC register access\n\nPer the SDM, \"any access that touches bytes 4 through 15 of an APIC\nregister may cause undefined behavior and must not be executed.\"\nWorse, such an access in kvm_lapic_reg_read can result in a leak of\nkernel stack contents. Prior to commit 01402cf81051 (\"kvm: LAPIC:\nwrite down valid APIC registers\"), such an access was explicitly\ndisallowed. Restore the guard that was removed in that commit."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/x86/kvm/lapic.c"
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],
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"versions": [
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{
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"version": "01402cf81051f796dac7c60ca11d6147153ca46a",
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"lessThan": "bf99ea52970caeb4583bdba1192c1f9b53b12c84",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "01402cf81051f796dac7c60ca11d6147153ca46a",
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"lessThan": "018685461a5b9a9a70e664ac77aef0d7415a3fd5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "01402cf81051f796dac7c60ca11d6147153ca46a",
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"lessThan": "a2aff09807fbe4018c269d3773a629949058b210",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "01402cf81051f796dac7c60ca11d6147153ca46a",
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"lessThan": "218bf772bddd221489c38dde6ef8e917131161f6",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/x86/kvm/lapic.c"
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],
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"versions": [
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{
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"version": "5.3",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.3",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.128",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.46",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.12.13",
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"lessThanOrEqual": "5.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.13",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.4.128"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.10.46"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.12.13"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.13"
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84"
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},
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{
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"url": "https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5"
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},
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{
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"url": "https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210"
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},
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{
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"url": "https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6"
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}
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],
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"title": "kvm: LAPIC: Restore guard to prevent illegal APIC register access",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"title": "CISA ADP Vulnrichment",
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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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"id": "CVE-2021-47255",
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"role": "CISA Coordinator",
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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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"version": "2.0.3",
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"timestamp": "2024-05-21T18:50:43.929512Z"
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}
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}
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],
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"providerMetadata": {
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-06-04T17:14:17.935Z"
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"dateUpdated": "2024-08-04T05:32:07.995Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84",
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} |