CVE-2026-80873

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80873", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.798Z", "datePublished": "2026-09-04T16:48:40.889Z", "dateUpdated": "2026-09-04T16:48:40.889Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-04T16:48:40.889Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions\n\nkvm_inject_el2_exception() writes ESR_EL2 for synchronous exceptions\nbut not for SError. enter_exception64() does not write ESR_ELx for any\nexception type, so the constructed syndrome is dropped. A guest L2\nhypervisor taking a nested SError observes stale ESR_EL2.\n\nThis affects both kvm_inject_nested_serror() and the EASE path in\nkvm_inject_nested_sea().\n\nWrite ESR_EL2 for except_type_serror, matching except_type_sync."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/kvm/emulate-nested.c"], "versions": [{"version": "77ee70a073575977b403e9add25f185d614217d8", "lessThan": "09f35145f3a4aacea4d9b914ad895bf5af8fc4ae", "status": "affected", "versionType": "git"}, {"version": "77ee70a073575977b403e9add25f185d614217d8", "lessThan": "29227821e2320ff6a174c91742b4ce221fe8d563", "status": "affected", "versionType": "git"}, {"version": "77ee70a073575977b403e9add25f185d614217d8", "lessThan": "e2cb1f4578625e71f461d5c1ce70984193389cbb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/kvm/emulate-nested.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/09f35145f3a4aacea4d9b914ad895bf5af8fc4ae"}, {"url": "https://git.kernel.org/stable/c/29227821e2320ff6a174c91742b4ce221fe8d563"}, {"url": "https://git.kernel.org/stable/c/e2cb1f4578625e71f461d5c1ce70984193389cbb"}], "title": "KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/arm64/kvm/emulate-nested.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "09f35145f3a4aacea4d9b914ad895bf5af8fc4ae", "status": "affected", "version": "77ee70a073575977b403e9add25f185d614217d8", "versionType": "git"}, {"lessThan": "29227821e2320ff6a174c91742b4ce221fe8d563", "status": "affected", "version": "77ee70a073575977b403e9add25f185d614217d8", "versionType": "git"}, {"lessThan": "e2cb1f4578625e71f461d5c1ce70984193389cbb", "status": "affected", "version": "77ee70a073575977b403e9add25f185d614217d8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/arm64/kvm/emulate-nested.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions\n\nkvm_inject_el2_exception() writes ESR_EL2 for synchronous exceptions\nbut not for SError. enter_exception64() does not write ESR_ELx for any\nexception type, so the constructed syndrome is dropped. A guest L2\nhypervisor taking a nested SError observes stale ESR_EL2.\n\nThis affects both kvm_inject_nested_serror() and the EASE path in\nkvm_inject_nested_sea().\n\nWrite ESR_EL2 for except_type_serror, matching except_type_sync."}], "id": "CVE-2026-80873", "lastModified": "2026-09-04T17:16:59.273", "metrics": {}, "published": "2026-09-04T17:16:59.273", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/09f35145f3a4aacea4d9b914ad895bf5af8fc4ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29227821e2320ff6a174c91742b4ce221fe8d563"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e2cb1f4578625e71f461d5c1ce70984193389cbb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[77ee70a073575977b403e9add25f185d614217d8,09f35145f3a4aacea4d9b914ad895bf5af8fc4ae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[77ee70a073575977b403e9add25f185d614217d8,29227821e2320ff6a174c91742b4ce221fe8d563)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[77ee70a073575977b403e9add25f185d614217d8,e2cb1f4578625e71f461d5c1ce70984193389cbb)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-04T21:30:07.586529+00:00", "updated": "2026-09-04T23:30:06.164928+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-754"]}