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CVE-2025-38239 (GCVE-0-2025-38239)

Vulnerability from cvelistv5 – Published: 2025-07-09 10:42 – Updated: 2026-08-05 12:00
VLAI
Title
scsi: megaraid_sas: Fix invalid node index
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: megaraid_sas: Fix invalid node index On a system with DRAM interleave enabled, out-of-bound access is detected: megaraid_sas 0000:3f:00.0: requested/available 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 Fix it accordingly.
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8049da6f3943d0ac51931b8064b2e4769a69a967 , < f1064b3532192e987ab17be7281d5fee36fd25e1 (git)
Affected: 8049da6f3943d0ac51931b8064b2e4769a69a967 , < bf2c1643abc3b2507d56bb6c22bf9897272f8a35 (git)
Affected: 8049da6f3943d0ac51931b8064b2e4769a69a967 , < 19a47c966deb36624843b7301f0373a3dc541a05 (git)
Affected: 8049da6f3943d0ac51931b8064b2e4769a69a967 , < 074efb35552556a4b3b25eedab076d5dc24a8199 (git)
Affected: 8049da6f3943d0ac51931b8064b2e4769a69a967 , < 752eb816b55adb0673727ba0ed96609a17895654 (git)
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Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 6.1.143 , ≤ 6.1.* (semver)
Unaffected: 6.6.96 , ≤ 6.6.* (semver)
Unaffected: 6.12.36 , ≤ 6.12.* (semver)
Unaffected: 6.15.5 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "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 \u0027cpumask *[1024]\u0027\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."
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              "value": "AV:L - The bug is in the megaraid_sas PCI probe path and its consequence is consumed via a local procfs read (`/proc/irq/\u003cN\u003e/affinity_hint`); there is no network-reachable component. 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/\u003cN\u003e/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\u0027s 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\u0027s 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\u0027s interrupt affinity can be left broken."
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/f1064b3532192e987ab17be7281d5fee36fd25e1"
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        {
          "url": "https://git.kernel.org/stable/c/bf2c1643abc3b2507d56bb6c22bf9897272f8a35"
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          "url": "https://git.kernel.org/stable/c/19a47c966deb36624843b7301f0373a3dc541a05"
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      "title": "scsi: megaraid_sas: Fix invalid node index",
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    "datePublished": "2025-07-09T10:42:24.170Z",
    "dateReserved": "2025-04-16T04:51:23.996Z",
    "dateUpdated": "2026-08-05T12:00:37.602Z",
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      "product_status:fixed": "2",
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "scsi: megaraid_sas: Fix invalid node index",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-38239.json",
      "version": "2"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38239\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-09T11:15:25.983\",\"lastModified\":\"2026-07-30T06:23:03.330\",\"vulnStatus\":\"Modified\",\"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 \u0027cpumask *[1024]\u0027\\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 \u0027cpumask *[1024]\u0027 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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/scsi/megaraid/megaraid_sas_base.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"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\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/scsi/megaraid/megaraid_sas_base.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.143\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.96\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.36\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.5\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H\",\"baseScore\":7.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-129\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"6.1.143\",\"matchCriteriaId\":\"D8A5C04C-B957-4240-B2A3-2317C47666EB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.96\",\"matchCriteriaId\":\"6AB3EB1A-48DE-47F4-9202-D0C58A0F6060\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.36\",\"matchCriteriaId\":\"2BD88DEC-018F-4F40-8E29-A2CA89813EBA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.15.5\",\"matchCriteriaId\":\"0CC768E2-3BBC-4A6E-9C2F-ECB27A703C2D\"},{\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/074efb35552556a4b3b25eedab076d5dc24a8199\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c0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List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-30T10:09:18+00:00",
      "cve": "CVE-2025-38239",
      "id": "CVE-2025-38239",
      "initial_release_date": "2025-07-09T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: megaraid_sas: Fix invalid node index",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38239.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:19:43Z",
      "cve": "CVE-2025-38239",
      "id": "CVE-2025-38239",
      "initial_release_date": "2025-07-09T23:23:18Z",
      "product_status:known_affected": "504",
      "product_status:known_not_affected": "332",
      "product_status:recommended": "396",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38239",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38239.json",
      "version": "28"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.