CVE-2026-63937

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63937", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.022Z", "datePublished": "2026-07-19T14:55:34.554Z", "dateUpdated": "2026-10-19T20:17:57.516Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:37:24.499Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer\n\nUse READ_ONCE() when reading entries/indices from the guest-accessible\nPage State Change buffer to defend against TOCTOU bugs.\n\nDon't bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing\n(and not consuming the result!), as the guest isn't supposed to touch the\nbuffer while it's being processed. I.e. using READ_ONCE() is all about\nprotecting against misbehaving guests."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires code execution inside an SEV-SNP guest that issues VMGEXIT PSC events into the host KVM hypervisor; this is local access to the host kernel via a guest-controlled hypercall path, not a remote network protocol.\nAC:L - The attacker fully controls the guest-accessible PSC buffer and can trigger concurrent VMGEXITs or use multiple vCPUs to modify indices/entries between KVM's validation read and later use, reliably winning the TOCTOU race without depending on uncontrollable host conditions.\nPR:L - The attacker only needs the ability to run code in an SEV-SNP guest on a KVM host (e.g., a cloud confidential-computing tenant), not real root or capabilities in the host's init namespace.\nUI:N - No victim interaction is required beyond the attacker operating their own malicious guest workload; PSC VMGEXITs are triggered programmatically from guest code.\nS:C - The vulnerable code runs in the host hypervisor but is reached from an untrusted guest; successful exploitation crosses the VM security boundary and can alter host-managed SEV-SNP page-state (RMP) for guest physical addresses.\nC:H - TOCTOU manipulation of PSC entries/indices can bypass validation and drive KVM_HC_MAP_GPA_RANGE on unvalidated GPA ranges, potentially flipping pages between private and shared and disclosing encrypted guest (or host-visible) memory beyond what was checked.\nI:H - The same TOCTOU allows inflating combined page ranges and operations passed to userspace, enabling unauthorized modification of page encryption attributes and corrupting hypervisor-managed memory state via misdirected MAP_GPA_RANGE processing.\nA:H - Incorrect indices and out-of-sync buffer state can cause invalid hypervisor processing, kernel warnings/panics, or repeated disruption of the host's KVM/SEV-SNP path; memory-corruption-class TOCTOU bugs are scored at full availability impact when exploitability is uncertain."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kvm/svm/sev.c"], "versions": [{"version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "bd232801ef1d1fd985d2d4ca3cd1d888303ca86f", "status": "affected", "versionType": "git"}, {"version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "b1dfaa6f7a957726a6800135be3659fbe4bbf2a4", "status": "affected", "versionType": "git"}, {"version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "edbbe88f83b524434974e84808d3093199d67c24", "status": "affected", "versionType": "git"}, {"version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "c8cc238093ca6c99267032f6cfe78f59389f3157", "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/x86/kvm/svm/sev.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.11", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/bd232801ef1d1fd985d2d4ca3cd1d888303ca86f"}, {"url": "https://git.kernel.org/stable/c/b1dfaa6f7a957726a6800135be3659fbe4bbf2a4"}, {"url": "https://git.kernel.org/stable/c/edbbe88f83b524434974e84808d3093199d67c24"}, {"url": "https://git.kernel.org/stable/c/c8cc238093ca6c99267032f6cfe78f59389f3157"}], "title": "KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-63937", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:33:43.123685Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-367", "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:17:57.516Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-63937", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:33:43.123685Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-367", "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:33:43.704Z"}}], "cna": {"title": "KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires code execution inside an SEV-SNP guest that issues VMGEXIT PSC events into the host KVM hypervisor; this is local access to the host kernel via a guest-controlled hypercall path, not a remote network protocol.\nAC:L - The attacker fully controls the guest-accessible PSC buffer and can trigger concurrent VMGEXITs or use multiple vCPUs to modify indices/entries between KVM's validation read and later use, reliably winning the TOCTOU race without depending on uncontrollable host conditions.\nPR:L - The attacker only needs the ability to run code in an SEV-SNP guest on a KVM host (e.g., a cloud confidential-computing tenant), not real root or capabilities in the host's init namespace.\nUI:N - No victim interaction is required beyond the attacker operating their own malicious guest workload; PSC VMGEXITs are triggered programmatically from guest code.\nS:C - The vulnerable code runs in the host hypervisor but is reached from an untrusted guest; successful exploitation crosses the VM security boundary and can alter host-managed SEV-SNP page-state (RMP) for guest physical addresses.\nC:H - TOCTOU manipulation of PSC entries/indices can bypass validation and drive KVM_HC_MAP_GPA_RANGE on unvalidated GPA ranges, potentially flipping pages between private and shared and disclosing encrypted guest (or host-visible) memory beyond what was checked.\nI:H - The same TOCTOU allows inflating combined page ranges and operations passed to userspace, enabling unauthorized modification of page encryption attributes and corrupting hypervisor-managed memory state via misdirected MAP_GPA_RANGE processing.\nA:H - Incorrect indices and out-of-sync buffer state can cause invalid hypervisor processing, kernel warnings/panics, or repeated disruption of the host's KVM/SEV-SNP path; memory-corruption-class TOCTOU bugs are scored at full availability impact when exploitability is uncertain."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "bd232801ef1d1fd985d2d4ca3cd1d888303ca86f", "versionType": "git"}, {"status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "b1dfaa6f7a957726a6800135be3659fbe4bbf2a4", "versionType": "git"}, {"status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "edbbe88f83b524434974e84808d3093199d67c24", "versionType": "git"}, {"status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "lessThan": "c8cc238093ca6c99267032f6cfe78f59389f3157", "versionType": "git"}], "programFiles": ["arch/x86/kvm/svm/sev.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"status": "unaffected", "version": "0", "lessThan": "6.11", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.93", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.35", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.12", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["arch/x86/kvm/svm/sev.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/bd232801ef1d1fd985d2d4ca3cd1d888303ca86f"}, {"url": "https://git.kernel.org/stable/c/b1dfaa6f7a957726a6800135be3659fbe4bbf2a4"}, {"url": "https://git.kernel.org/stable/c/edbbe88f83b524434974e84808d3093199d67c24"}, {"url": "https://git.kernel.org/stable/c/c8cc238093ca6c99267032f6cfe78f59389f3157"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer\n\nUse READ_ONCE() when reading entries/indices from the guest-accessible\nPage State Change buffer to defend against TOCTOU bugs.\n\nDon't bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing\n(and not consuming the result!), as the guest isn't supposed to touch the\nbuffer while it's being processed. I.e. using READ_ONCE() is all about\nprotecting against misbehaving guests."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.93", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:37:24.499Z"}}}, "cveMetadata": {"cveId": "CVE-2026-63937", "state": "PUBLISHED", "dateUpdated": "2026-10-19T20:17:57.516Z", "dateReserved": "2026-07-19T07:54:57.022Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-19T14:55:34.554Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/sev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bd232801ef1d1fd985d2d4ca3cd1d888303ca86f", "status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "versionType": "git"}, {"lessThan": "b1dfaa6f7a957726a6800135be3659fbe4bbf2a4", "status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "versionType": "git"}, {"lessThan": "edbbe88f83b524434974e84808d3093199d67c24", "status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "versionType": "git"}, {"lessThan": "c8cc238093ca6c99267032f6cfe78f59389f3157", "status": "affected", "version": "9b54e248d2644be71cb394eb85f31ad99e023a05", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/sev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.93", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.35", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "424D443C-A075-4671-94EC-F9F3E489E267", "versionEndExcluding": "6.12.93", "versionStartIncluding": "6.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FCCB23A-7629-4386-93B6-B119237C4382", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9161A938-0FA8-44BC-95FE-C5A271601AB3", "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer\n\nUse READ_ONCE() when reading entries/indices from the guest-accessible\nPage State Change buffer to defend against TOCTOU bugs.\n\nDon't bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing\n(and not consuming the result!), as the guest isn't supposed to touch the\nbuffer while it's being processed. I.e. using READ_ONCE() is all about\nprotecting against misbehaving guests."}], "id": "CVE-2026-63937", "lastModified": "2026-10-27T13:04:31.667", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63937", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:33:43.123685Z", "version": "2.0.3"}}]}, "published": "2026-07-19T16:17:12.193", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b1dfaa6f7a957726a6800135be3659fbe4bbf2a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd232801ef1d1fd985d2d4ca3cd1d888303ca86f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c8cc238093ca6c99267032f6cfe78f59389f3157"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edbbe88f83b524434974e84808d3093199d67c24"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer", "id": "2502399", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502399"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-367", "details": ["A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) with Secure Encrypted Virtualization (SEV). This time-of-check to time-of-use (TOCTOU) vulnerability exists when KVM processes the guest-accessible Page State Change (PSC) buffer. A misbehaving guest could exploit this timing issue by modifying the buffer after it has been checked but before it is used, potentially leading to an impact on the integrity of the virtualized environment."], "name": "CVE-2026-63937", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63937\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63937\nhttps://lore.kernel.org/linux-cve-announce/2026071951-CVE-2026-63937-80da@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9b54e248d2644be71cb394eb85f31ad99e023a05,bd232801ef1d1fd985d2d4ca3cd1d888303ca86f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9b54e248d2644be71cb394eb85f31ad99e023a05,b1dfaa6f7a957726a6800135be3659fbe4bbf2a4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9b54e248d2644be71cb394eb85f31ad99e023a05,edbbe88f83b524434974e84808d3093199d67c24)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9b54e248d2644be71cb394eb85f31ad99e023a05,c8cc238093ca6c99267032f6cfe78f59389f3157)"}}], "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": "semver", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.93,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-07-22T04:00:04.778683+00:00", "updated": "2026-08-04T18:15:03.371013+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}