CVE-2025-38239

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Local access to the machine is required.\nAC:L - On a system in the affected configuration the out-of-bounds `node_to_cpumask_map[-1]` read occurs deterministically on every probe, and the follow-on procfs read that dereferences the poisoned pointer is a plain file read the attacker can repeat at will with no race or timing dependency.\nPR:L - The corrupted `irq_desc::affinity_hint` is installed by the system itself during ordinary boot without any attacker action; dereferencing it only requires reading world-readable (0444) `/proc/irq/<N>/affinity_hint`, which any unprivileged local account can do.\nUI:N - The vulnerable state is established automatically at driver probe, and the attacker triggers the dereference himself via a procfs read \u2014 no victim action of any kind is needed.\nS:U - The out-of-bounds read, the wild dereference, and its effects are all confined to the kernel's own security authority with no crossing into a hypervisor, IOMMU, or other domain.\nC:H - An uncontrolled value adjacent to `node_to_cpumask_map` is treated as a `struct cpumask *`, and `cpumask_copy()` reads `nr_cpu_ids` bits from that arbitrary kernel address straight into a bitmap printed to unprivileged userspace \u2014 kernel memory disclosure, not a strictly bounded few-byte read.\nI:L - No out-of-bounds write or control-flow hijack primitive exists; the only modification is that MSI-X affinity for the eight high-IOPS storage vectors gets programmed from an uncontrolled mask, misconfiguring interrupt routing on the system's RAID controller.\nA:H - Dereferencing an arbitrary, potentially unmapped value as a cpumask inside `raw_spinlock_irq` with interrupts disabled can oops or panic the kernel, and the storage controller's interrupt affinity can be left broken."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/megaraid/megaraid_sas_base.c"], "versions": [{"version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "f1064b3532192e987ab17be7281d5fee36fd25e1", "status": "affected", "versionType": "git"}, {"version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "bf2c1643abc3b2507d56bb6c22bf9897272f8a35", "status": "affected", "versionType": "git"}, {"version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "19a47c966deb36624843b7301f0373a3dc541a05", "status": "affected", "versionType": "git"}, {"version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "074efb35552556a4b3b25eedab076d5dc24a8199", "status": "affected", "versionType": "git"}, {"version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "752eb816b55adb0673727ba0ed96609a17895654", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/megaraid/megaraid_sas_base.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.143", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.96", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.36", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.5", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "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": "5.17", "versionEndExcluding": "6.1.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.15.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f1064b3532192e987ab17be7281d5fee36fd25e1"}, {"url": "https://git.kernel.org/stable/c/bf2c1643abc3b2507d56bb6c22bf9897272f8a35"}, {"url": "https://git.kernel.org/stable/c/19a47c966deb36624843b7301f0373a3dc541a05"}, {"url": "https://git.kernel.org/stable/c/074efb35552556a4b3b25eedab076d5dc24a8199"}, {"url": "https://git.kernel.org/stable/c/752eb816b55adb0673727ba0ed96609a17895654"}], "title": "scsi: megaraid_sas: Fix invalid node index", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:35:53.326Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38239", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:48:47.838370Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:52:12.179Z"}}]}}

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Local access to the machine is required.\nAC:L - On a system in the affected configuration the out-of-bounds `node_to_cpumask_map[-1]` read occurs deterministically on every probe, and the follow-on procfs read that dereferences the poisoned pointer is a plain file read the attacker can repeat at will with no race or timing dependency.\nPR:L - The corrupted `irq_desc::affinity_hint` is installed by the system itself during ordinary boot without any attacker action; dereferencing it only requires reading world-readable (0444) `/proc/irq/<N>/affinity_hint`, which any unprivileged local account can do.\nUI:N - The vulnerable state is established automatically at driver probe, and the attacker triggers the dereference himself via a procfs read \u2014 no victim action of any kind is needed.\nS:U - The out-of-bounds read, the wild dereference, and its effects are all confined to the kernel's own security authority with no crossing into a hypervisor, IOMMU, or other domain.\nC:H - An uncontrolled value adjacent to `node_to_cpumask_map` is treated as a `struct cpumask *`, and `cpumask_copy()` reads `nr_cpu_ids` bits from that arbitrary kernel address straight into a bitmap printed to unprivileged userspace \u2014 kernel memory disclosure, not a strictly bounded few-byte read.\nI:L - No out-of-bounds write or control-flow hijack primitive exists; the only modification is that MSI-X affinity for the eight high-IOPS storage vectors gets programmed from an uncontrolled mask, misconfiguring interrupt routing on the system's RAID controller.\nA:H - Dereferencing an arbitrary, potentially unmapped value as a cpumask inside `raw_spinlock_irq` with interrupts disabled can oops or panic the kernel, and the storage controller's interrupt affinity can be left broken."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "f1064b3532192e987ab17be7281d5fee36fd25e1", "versionType": "git"}, {"status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "bf2c1643abc3b2507d56bb6c22bf9897272f8a35", "versionType": "git"}, {"status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "19a47c966deb36624843b7301f0373a3dc541a05", "versionType": "git"}, {"status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "074efb35552556a4b3b25eedab076d5dc24a8199", "versionType": "git"}, {"status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "lessThan": "752eb816b55adb0673727ba0ed96609a17895654", "versionType": "git"}], "programFiles": ["drivers/scsi/megaraid/megaraid_sas_base.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/scsi/megaraid/megaraid_sas_base.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f1064b3532192e987ab17be7281d5fee36fd25e1", "status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "versionType": "git"}, {"lessThan": "bf2c1643abc3b2507d56bb6c22bf9897272f8a35", "status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "versionType": "git"}, {"lessThan": "19a47c966deb36624843b7301f0373a3dc541a05", "status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "versionType": "git"}, {"lessThan": "074efb35552556a4b3b25eedab076d5dc24a8199", "status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "versionType": "git"}, {"lessThan": "752eb816b55adb0673727ba0ed96609a17895654", "status": "affected", "version": "8049da6f3943d0ac51931b8064b2e4769a69a967", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/scsi/megaraid/megaraid_sas_base.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.143", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.96", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.36", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8A5C04C-B957-4240-B2A3-2317C47666EB", "versionEndExcluding": "6.1.143", "versionStartIncluding": "5.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6AB3EB1A-48DE-47F4-9202-D0C58A0F6060", "versionEndExcluding": "6.6.96", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2BD88DEC-018F-4F40-8E29-A2CA89813EBA", "versionEndExcluding": "6.12.36", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0CC768E2-3BBC-4A6E-9C2F-ECB27A703C2D", "versionEndExcluding": "6.15.5", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*", "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: megaraid_sas: Fix invalid node index\n\nOn a system with DRAM interleave enabled, out-of-bound access is\ndetected:\n\nmegaraid_sas 0000:3f:00.0: requested/available msix 128/128 poll_queue 0\n------------[ cut here ]------------\nUBSAN: array-index-out-of-bounds in ./arch/x86/include/asm/topology.h:72:28\nindex -1 is out of range for type 'cpumask *[1024]'\ndump_stack_lvl+0x5d/0x80\nubsan_epilogue+0x5/0x2b\n__ubsan_handle_out_of_bounds.cold+0x46/0x4b\nmegasas_alloc_irq_vectors+0x149/0x190 [megaraid_sas]\nmegasas_probe_one.cold+0xa4d/0x189c [megaraid_sas]\nlocal_pci_probe+0x42/0x90\npci_device_probe+0xdc/0x290\nreally_probe+0xdb/0x340\n__driver_probe_device+0x78/0x110\ndriver_probe_device+0x1f/0xa0\n__driver_attach+0xba/0x1c0\nbus_for_each_dev+0x8b/0xe0\nbus_add_driver+0x142/0x220\ndriver_register+0x72/0xd0\nmegasas_init+0xdf/0xff0 [megaraid_sas]\ndo_one_initcall+0x57/0x310\ndo_init_module+0x90/0x250\ninit_module_from_file+0x85/0xc0\nidempotent_init_module+0x114/0x310\n__x64_sys_finit_module+0x65/0xc0\ndo_syscall_64+0x82/0x170\nentry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix it accordingly."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: megaraid_sas: Se corrige un \u00edndice de nodo no v\u00e1lido. En un sistema con intercalaci\u00f3n de DRAM habilitada, se detecta acceso fuera de los l\u00edmites: megaraid_sas 0000:3f:00.0: solicitado/disponible msix 128/128 poll_queue 0 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in ./arch/x86/include/asm/topology.h:72:28 index -1 is out of range for type 'cpumask *[1024]' dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x2b __ubsan_handle_out_of_bounds.cold+0x46/0x4b megasas_alloc_irq_vectors+0x149/0x190 [megaraid_sas] megasas_probe_one.cold+0xa4d/0x189c [megaraid_sas] local_pci_probe+0x42/0x90 pci_device_probe+0xdc/0x290 really_probe+0xdb/0x340 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8b/0xe0 bus_add_driver+0x142/0x220 driver_register+0x72/0xd0 megasas_init+0xdf/0xff0 [megaraid_sas] do_one_initcall+0x57/0x310 do_init_module+0x90/0x250 init_module_from_file+0x85/0xc0 idempotent_init_module+0x114/0x310 __x64_sys_finit_module+0x65/0xc0 do_syscall_64+0x82/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Corr\u00edjalo como corresponda."}], "id": "CVE-2025-38239", "lastModified": "2026-10-15T22:18:36.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.5, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-38239", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:48:47.838370Z", "version": "2.0.3"}}]}, "published": "2025-07-09T11:15:25.983", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/074efb35552556a4b3b25eedab076d5dc24a8199"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19a47c966deb36624843b7301f0373a3dc541a05"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/752eb816b55adb0673727ba0ed96609a17895654"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf2c1643abc3b2507d56bb6c22bf9897272f8a35"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1064b3532192e987ab17be7281d5fee36fd25e1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: scsi: megaraid_sas: Fix invalid node index", "id": "2378990", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2378990"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38239", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "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": "2025-07-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38239\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38239\nhttps://lore.kernel.org/linux-cve-announce/2025070933-CVE-2025-38239-678a@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-13T21:08:08.904249+00:00", "updated": "2025-07-13T21:08:08.904345+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}