CVE-2026-31403

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If the namespace is subsequently torn down\n(e.g. container destruction after the opener does setns() to a\ndifferent namespace), nfsd_net_exit() calls nfsd_export_shutdown()\nwhich frees the cache. Subsequent reads on the still-open fd\ndereference the freed cache_detail, walking a freed hash table.\n\nHold a reference on the struct net for the lifetime of the open\nfile descriptor. This prevents nfsd_net_exit() from running --\nand thus prevents nfsd_export_shutdown() from freeing the cache\n-- while any exports fd is open. cache_detail already stores\nits net pointer (cd->net, set by cache_create_net()), so\nexports_release() can retrieve it without additional per-file\nstorage."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is reached by locally opening and reading `/proc/fs/nfs/exports`; remote NFS protocol traffic does not invoke this proc seq_file path.\nAC:L - The attacker controls the needed sequence: open the proc file in a network namespace, let that namespace be torn down, then read the still-open fd. No uncontrollable race or special timing is required.\nPR:L - The proc entry is world-readable, and a basic unprivileged local user can plausibly create a temporary network namespace via user namespaces to trigger the lifetime bug. It does not require real root in the initial namespace or NFSD administrator privileges.\nUI:N - No victim action is required; the attacker can open, transfer or retain, and read the file descriptor themselves.\nS:U - The impact remains within the kernel and its local host security authority. This is not a VM escape, IOMMU bypass, or other cross-scope boundary violation.\nC:H - This is a use-after-free of `cache_detail` and its freed hash table during seq_file iteration. The dangling heap objects can be reused and dereferenced, making high confidentiality impact defensible.\nI:H - As a kernel heap use-after-free, reused object contents can potentially be shaped into memory corruption or control-flow primitives. Following the higher-severity rule for UAFs, integrity impact is High.\nA:H - Reading the stale fd dereferences freed kernel memory and can oops or panic the kernel. The attacker can trigger this repeatedly once the namespace teardown condition is created."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfsd/nfsctl.c"], "versions": [{"version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "76740c28050dc6db2f5550f1325b00a11bbb3255", "status": "affected", "versionType": "git"}, {"version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "c7f406fb341d6747634b8b1fa5461656e5e56076", "status": "affected", "versionType": "git"}, {"version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "d1a19217995df9c7e4118f5a2820c5032fef2945", "status": "affected", "versionType": "git"}, {"version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "e3d77f935639e6ae4b381c80464c31df998d61f4", "status": "affected", "versionType": "git"}, {"version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", 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"status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.20", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.10", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "3.9", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.18.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.19.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/76740c28050dc6db2f5550f1325b00a11bbb3255"}, {"url": "https://git.kernel.org/stable/c/c7f406fb341d6747634b8b1fa5461656e5e56076"}, {"url": "https://git.kernel.org/stable/c/d1a19217995df9c7e4118f5a2820c5032fef2945"}, {"url": "https://git.kernel.org/stable/c/e3d77f935639e6ae4b381c80464c31df998d61f4"}, {"url": "https://git.kernel.org/stable/c/db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6"}, {"url": "https://git.kernel.org/stable/c/6a8d70e2ad6aad2c345a5048edcb8168036f97d6"}, {"url": "https://git.kernel.org/stable/c/e7fcf179b82d3a3730fd8615da01b087cc654d0b"}], "title": "NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-11-10T12:43:55.251Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "versions": [{"status": "affected", "version": "V3.1.5", "lessThan": "*", "versionType": "custom"}], "defaultStatus": 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No uncontrollable race or special timing is required.\nPR:L - The proc entry is world-readable, and a basic unprivileged local user can plausibly create a temporary network namespace via user namespaces to trigger the lifetime bug. It does not require real root in the initial namespace or NFSD administrator privileges.\nUI:N - No victim action is required; the attacker can open, transfer or retain, and read the file descriptor themselves.\nS:U - The impact remains within the kernel and its local host security authority. This is not a VM escape, IOMMU bypass, or other cross-scope boundary violation.\nC:H - This is a use-after-free of `cache_detail` and its freed hash table during seq_file iteration. The dangling heap objects can be reused and dereferenced, making high confidentiality impact defensible.\nI:H - As a kernel heap use-after-free, reused object contents can potentially be shaped into memory corruption or control-flow primitives. Following the higher-severity rule for UAFs, integrity impact is High.\nA:H - Reading the stale fd dereferences freed kernel memory and can oops or panic the kernel. The attacker can trigger this repeatedly once the namespace teardown condition is created."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "76740c28050dc6db2f5550f1325b00a11bbb3255", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "c7f406fb341d6747634b8b1fa5461656e5e56076", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "d1a19217995df9c7e4118f5a2820c5032fef2945", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "e3d77f935639e6ae4b381c80464c31df998d61f4", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "6a8d70e2ad6aad2c345a5048edcb8168036f97d6", "versionType": "git"}, {"status": "affected", "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5", "lessThan": "e7fcf179b82d3a3730fd8615da01b087cc654d0b", "versionType": "git"}], "programFiles": ["fs/nfsd/nfsctl.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.9"}, {"status": "unaffected", "version": "0", "lessThan": "3.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "6.1.167", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.130", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.78", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.20", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.10", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/nfsd/nfsctl.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/76740c28050dc6db2f5550f1325b00a11bbb3255"}, {"url": "https://git.kernel.org/stable/c/c7f406fb341d6747634b8b1fa5461656e5e56076"}, {"url": "https://git.kernel.org/stable/c/d1a19217995df9c7e4118f5a2820c5032fef2945"}, {"url": "https://git.kernel.org/stable/c/e3d77f935639e6ae4b381c80464c31df998d61f4"}, {"url": "https://git.kernel.org/stable/c/db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6"}, {"url": "https://git.kernel.org/stable/c/6a8d70e2ad6aad2c345a5048edcb8168036f97d6"}, {"url": "https://git.kernel.org/stable/c/e7fcf179b82d3a3730fd8615da01b087cc654d0b"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd\n\nThe /proc/fs/nfs/exports proc entry is created at module init\nand persists for the module's lifetime. exports_proc_open()\ncaptures the caller's current network namespace and stores\nits svc_export_cache in seq->private, but takes no reference\non the namespace. If the namespace is subsequently torn down\n(e.g. container destruction after the opener does setns() to a\ndifferent namespace), nfsd_net_exit() calls nfsd_export_shutdown()\nwhich frees the cache. Subsequent reads on the still-open fd\ndereference the freed cache_detail, walking a freed hash table.\n\nHold a reference on the struct net for the lifetime of the open\nfile descriptor. This prevents nfsd_net_exit() from running --\nand thus prevents nfsd_export_shutdown() from freeing the cache\n-- while any exports fd is open. cache_detail already stores\nits net pointer (cd->net, set by cache_create_net()), so\nexports_release() can retrieve it without additional per-file\nstorage."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.253", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.167", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.130", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.78", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.20", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.10", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "3.9"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:22:11.457Z"}}}, "cveMetadata": {"cveId": "CVE-2026-31403", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:43:55.251Z", "dateReserved": "2026-03-09T15:48:24.086Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-04-03T15:16:06.444Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.5", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": 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reference for the lifetime of /proc/fs/nfs/exports fd\n\nThe /proc/fs/nfs/exports proc entry is created at module init\nand persists for the module's lifetime. exports_proc_open()\ncaptures the caller's current network namespace and stores\nits svc_export_cache in seq->private, but takes no reference\non the namespace. If the namespace is subsequently torn down\n(e.g. container destruction after the opener does setns() to a\ndifferent namespace), nfsd_net_exit() calls nfsd_export_shutdown()\nwhich frees the cache. Subsequent reads on the still-open fd\ndereference the freed cache_detail, walking a freed hash table.\n\nHold a reference on the struct net for the lifetime of the open\nfile descriptor. This prevents nfsd_net_exit() from running --\nand thus prevents nfsd_export_shutdown() from freeing the cache\n-- while any exports fd is open. cache_detail already stores\nits net pointer (cd->net, set by cache_create_net()), so\nexports_release() can retrieve it without additional per-file\nstorage."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nNFSD: Mantener la referencia de red durante la vida \u00fatil del fd /proc/fs/nfs/exports\n\nLa entrada proc /proc/fs/nfs/exports se crea en la inicializaci\u00f3n del m\u00f3dulo y persiste durante la vida \u00fatil del m\u00f3dulo. exports_proc_open() captura el espacio de nombres de red actual del llamador y almacena su svc_export_cache en seq -> private, pero no toma ninguna referencia sobre el espacio de nombres. Si el espacio de nombres se desmantela posteriormente (p. ej., destrucci\u00f3n del contenedor despu\u00e9s de que el abridor haga setns() a un espacio de nombres diferente), nfsd_net_exit() llama a nfsd_export_shutdown() que libera la cach\u00e9. Lecturas posteriores en el fd a\u00fan abierto desreferencian el cache_detail liberado, recorriendo una tabla hash liberada.\n\nMantener una referencia sobre la struct net durante la vida \u00fatil del descriptor de archivo abierto. Esto evita que nfsd_net_exit() se ejecute -- y por lo tanto evita que nfsd_export_shutdown() libere la cach\u00e9 -- mientras cualquier fd de exportaciones est\u00e9 abierto. cache_detail ya almacena su puntero de red (cd -> net, establecido por cache_create_net()), por lo que exports_release() puede recuperarlo sin almacenamiento adicional por archivo."}], "id": "CVE-2026-31403", "lastModified": "2026-11-10T13:18:51.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31403", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:08:54.794541Z", "version": "2.0.3"}}]}, "published": "2026-04-03T16:16:39.467", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6a8d70e2ad6aad2c345a5048edcb8168036f97d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76740c28050dc6db2f5550f1325b00a11bbb3255"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c7f406fb341d6747634b8b1fa5461656e5e56076"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d1a19217995df9c7e4118f5a2820c5032fef2945"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e3d77f935639e6ae4b381c80464c31df998d61f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e7fcf179b82d3a3730fd8615da01b087cc654d0b"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd", "id": "2454874", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454874"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Network File System Daemon (NFSD) component. A local user can exploit this vulnerability by opening the `/proc/fs/nfs/exports` file and then causing the associated network namespace to be destroyed. Subsequent attempts to read from the still-open file descriptor will lead to dereferencing freed memory, which can result in a system crash or a Denial of Service (DoS)."], "name": "CVE-2026-31403", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31403\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31403\nhttps://lore.kernel.org/linux-cve-announce/2026040328-CVE-2026-31403-5446@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,c7f406fb341d6747634b8b1fa5461656e5e56076)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,d1a19217995df9c7e4118f5a2820c5032fef2945)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,e3d77f935639e6ae4b381c80464c31df998d61f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,6a8d70e2ad6aad2c345a5048edcb8168036f97d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5,e7fcf179b82d3a3730fd8615da01b087cc654d0b)"}}], "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": "3.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,3.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.20,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.10,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0-rc5,*]"}}], "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": "2026-04-03T21:15:23.662740+00:00", "updated": "2026-10-23T08:30:09.482954+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}