CVE-2024-41096
Estado: ModificadaAlta (7.8)—
Detalles técnicos trazas, registros y código del informe original
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI/MSI: corrige UAF en msi_capability_init KFENCE informa el siguiente UAF: ERROR: KFENCE: lectura de uso después de liberación en __pci_enable_msi_range+0x2c0/0x488 Lectura de uso después de liberación en 0x0000000024629571 (en kfence-#12): __pci_enable_msi_range+0x2c0/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 kfence-#12: 0x0000000008614900-0x00000000e06c22 8d, tamaño=104, caché=kmalloc-128 asignado por la tarea 81 en la CPU 7 en 10.808142 s: __kmem_cache_alloc_node+0x1f0/0x2bc kmalloc_trace+0x44/0x138 msi_alloc_desc+0x3c/0x9c msi_domain_insert_msi_desc+0x30/0x78 msi_setup_msi_desc+0x13c/0x184 __pci_enable_msi_range+0 x258/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 liberado por la tarea 81 en la CPU 7 en 10.811436s: msi_domain_free_descs+0xd4/0x10c msi_domain_free_locked.part.0+0xc0/0x1d8 msi_domain_alloc_irqs_all_locked+0xb4/0xbc pci_msi_setup_msi_irqs+0x30/0x4c __pci_enable_msi_range+ 0x2a8/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 Asignación de descriptores realizada en: __pci_enable_msi_range msi_capability_init msi_setup_msi_desc msi_insert_msi_desc msi_domain_insert_msi_desc msi_alloc_desc ... Liberado en caso de fallo en __msi_domain_alloc_locked() __pci_enable_msi_range msi_capability_init pci_msi_setup_msi_irqs msi_domain_alloc_irqs_all_locked msi_domain_alloc_locked __msi_ domain_alloc_locked => falla msi_domain_free_locked... Ese error se propaga nuevamente a pci_msi_setup_msi_irqs() en msi_capability_init() que accede al descriptor para desenmascarar en la salida de error camino. Soréguelo copiando el descriptor y usando la copia para la operación de desenmascarar la ruta de salida del error. [tglx: registro de cambios masajeado]
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.24%
- Percentil entre todas las CVEs puntuadas: 14
- Fecha de la puntuación: 8/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-416
Referencias
- https://git.kernel.org/stable/c/0ae40b2d0a5de6b045504098e365d4fdff5bbeba
- https://git.kernel.org/stable/c/45fc8d20e0768ab0a0ad054081d0f68aa3c83976
- https://git.kernel.org/stable/c/9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1
- https://git.kernel.org/stable/c/ff1121d2214b794dc1772081f27bdd90721a84bc
- https://git.kernel.org/stable/c/45fc8d20e0768ab0a0ad054081d0f68aa3c83976
- https://git.kernel.org/stable/c/9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1
- https://git.kernel.org/stable/c/ff1121d2214b794dc1772081f27bdd90721a84bc
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2024-41096",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-41096",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-09-10T16:20:22.209715Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "bf6e054e0e3fbc9614355b760e18c8a14f952a4e",
"lessThan": "0ae40b2d0a5de6b045504098e365d4fdff5bbeba",
"versionType": "git"
},
{
"status": "affected",
"version": "bf6e054e0e3fbc9614355b760e18c8a14f952a4e",
"lessThan": "ff1121d2214b794dc1772081f27bdd90721a84bc",
"versionType": "git"
},
{
"status": "affected",
"version": "bf6e054e0e3fbc9614355b760e18c8a14f952a4e",
"lessThan": "45fc8d20e0768ab0a0ad054081d0f68aa3c83976",
"versionType": "git"
},
{
"status": "affected",
"version": "bf6e054e0e3fbc9614355b760e18c8a14f952a4e",
"lessThan": "9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1",
"versionType": "git"
}
],
"programFiles": [
"drivers/pci/msi/msi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.109",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.37",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.9.8",
"versionType": "semver",
"lessThanOrEqual": "6.9.*"
},
{
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/pci/msi/msi.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2024-07-29T16:15:04.683",
"references": [
{
"url": "https://git.kernel.org/stable/c/0ae40b2d0a5de6b045504098e365d4fdff5bbeba",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/45fc8d20e0768ab0a0ad054081d0f68aa3c83976",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ff1121d2214b794dc1772081f27bdd90721a84bc",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/45fc8d20e0768ab0a0ad054081d0f68aa3c83976",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://git.kernel.org/stable/c/9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://git.kernel.org/stable/c/ff1121d2214b794dc1772081f27bdd90721a84bc",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/MSI: Fix UAF in msi_capability_init\n\nKFENCE reports the following UAF:\n\n BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488\n\n Use-after-free read at 0x0000000024629571 (in kfence-#12):\n __pci_enable_msi_range+0x2c0/0x488\n pci_alloc_irq_vectors_affinity+0xec/0x14c\n pci_alloc_irq_vectors+0x18/0x28\n\n kfence-#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128\n\n allocated by task 81 on cpu 7 at 10.808142s:\n __kmem_cache_alloc_node+0x1f0/0x2bc\n kmalloc_trace+0x44/0x138\n msi_alloc_desc+0x3c/0x9c\n msi_domain_insert_msi_desc+0x30/0x78\n msi_setup_msi_desc+0x13c/0x184\n __pci_enable_msi_range+0x258/0x488\n pci_alloc_irq_vectors_affinity+0xec/0x14c\n pci_alloc_irq_vectors+0x18/0x28\n\n freed by task 81 on cpu 7 at 10.811436s:\n msi_domain_free_descs+0xd4/0x10c\n msi_domain_free_locked.part.0+0xc0/0x1d8\n msi_domain_alloc_irqs_all_locked+0xb4/0xbc\n pci_msi_setup_msi_irqs+0x30/0x4c\n __pci_enable_msi_range+0x2a8/0x488\n pci_alloc_irq_vectors_affinity+0xec/0x14c\n pci_alloc_irq_vectors+0x18/0x28\n\nDescriptor allocation done in:\n__pci_enable_msi_range\n msi_capability_init\n msi_setup_msi_desc\n msi_insert_msi_desc\n msi_domain_insert_msi_desc\n msi_alloc_desc\n ...\n\nFreed in case of failure in __msi_domain_alloc_locked()\n__pci_enable_msi_range\n msi_capability_init\n pci_msi_setup_msi_irqs\n msi_domain_alloc_irqs_all_locked\n msi_domain_alloc_locked\n __msi_domain_alloc_locked => fails\n msi_domain_free_locked\n ...\n\nThat failure propagates back to pci_msi_setup_msi_irqs() in\nmsi_capability_init() which accesses the descriptor for unmasking in the\nerror exit path.\n\nCure it by copying the descriptor and using the copy for the error exit path\nunmask operation.\n\n[ tglx: Massaged change log ]"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI/MSI: corrige UAF en msi_capability_init KFENCE informa el siguiente UAF: ERROR: KFENCE: lectura de uso después de liberación en __pci_enable_msi_range+0x2c0/0x488 Lectura de uso después de liberación en 0x0000000024629571 (en kfence-#12): __pci_enable_msi_range+0x2c0/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 kfence-#12: 0x0000000008614900-0x00000000e06c22 8d, tamaño=104, caché=kmalloc-128 asignado por la tarea 81 en la CPU 7 en 10.808142 s: __kmem_cache_alloc_node+0x1f0/0x2bc kmalloc_trace+0x44/0x138 msi_alloc_desc+0x3c/0x9c msi_domain_insert_msi_desc+0x30/0x78 msi_setup_msi_desc+0x13c/0x184 __pci_enable_msi_range+0 x258/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 liberado por la tarea 81 en la CPU 7 en 10.811436s: msi_domain_free_descs+0xd4/0x10c msi_domain_free_locked.part.0+0xc0/0x1d8 msi_domain_alloc_irqs_all_locked+0xb4/0xbc pci_msi_setup_msi_irqs+0x30/0x4c __pci_enable_msi_range+ 0x2a8/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 Asignación de descriptores realizada en: __pci_enable_msi_range msi_capability_init msi_setup_msi_desc msi_insert_msi_desc msi_domain_insert_msi_desc msi_alloc_desc ... Liberado en caso de fallo en __msi_domain_alloc_locked() __pci_enable_msi_range msi_capability_init pci_msi_setup_msi_irqs msi_domain_alloc_irqs_all_locked msi_domain_alloc_locked __msi_ domain_alloc_locked => falla msi_domain_free_locked... Ese error se propaga nuevamente a pci_msi_setup_msi_irqs() en msi_capability_init() que accede al descriptor para desenmascarar en la salida de error camino. Soréguelo copiando el descriptor y usando la copia para la operación de desenmascarar la ruta de salida del error. [tglx: registro de cambios masajeado]"
}
],
"lastModified": "2026-08-04T11:19:29.450",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D26A7F9F-B969-4382-8C7D-B7C3950BA178",
"versionEndExcluding": "6.1.109",
"versionStartIncluding": "5.17"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D72E033B-5323-4C4D-8818-36E1EBC3535F",
"versionEndExcluding": "6.6.37",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E95105F2-32E3-4C5F-9D18-7AEFD0E6275C",
"versionEndExcluding": "6.9.8",
"versionStartIncluding": "6.7"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}