FKIE_CVE-2025-23141
Vulnerability from fkie_nvd - Published: 2025-05-01 13:15 - Updated: 2026-07-30 06:22
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses
Acquire a lock on kvm->srcu when userspace is getting MP state to handle a
rather extreme edge case where "accepting" APIC events, i.e. processing
pending INIT or SIPI, can trigger accesses to guest memory. If the vCPU
is in L2 with INIT *and* a TRIPLE_FAULT request pending, then getting MP
state will trigger a nested VM-Exit by way of ->check_nested_events(), and
emuating the nested VM-Exit can access guest memory.
The splat was originally hit by syzkaller on a Google-internal kernel, and
reproduced on an upstream kernel by hacking the triple_fault_event_test
selftest to stuff a pending INIT, store an MSR on VM-Exit (to generate a
memory access on VMX), and do vcpu_mp_state_get() to trigger the scenario.
=============================
WARNING: suspicious RCU usage
6.14.0-rc3-b112d356288b-vmx/pi_lockdep_false_pos-lock #3 Not tainted
-----------------------------
include/linux/kvm_host.h:1058 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by triple_fault_ev/1256:
#0: ffff88810df5a330 (&vcpu->mutex){+.+.}-{4:4}, at: kvm_vcpu_ioctl+0x8b/0x9a0 [kvm]
stack backtrace:
CPU: 11 UID: 1000 PID: 1256 Comm: triple_fault_ev Not tainted 6.14.0-rc3-b112d356288b-vmx #3
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
Call Trace:
<TASK>
dump_stack_lvl+0x7f/0x90
lockdep_rcu_suspicious+0x144/0x190
kvm_vcpu_gfn_to_memslot+0x156/0x180 [kvm]
kvm_vcpu_read_guest+0x3e/0x90 [kvm]
read_and_check_msr_entry+0x2e/0x180 [kvm_intel]
__nested_vmx_vmexit+0x550/0xde0 [kvm_intel]
kvm_check_nested_events+0x1b/0x30 [kvm]
kvm_apic_accept_events+0x33/0x100 [kvm]
kvm_arch_vcpu_ioctl_get_mpstate+0x30/0x1d0 [kvm]
kvm_vcpu_ioctl+0x33e/0x9a0 [kvm]
__x64_sys_ioctl+0x8b/0xb0
do_syscall_64+0x6c/0x170
entry_SYSCALL_64_after_hwframe+0x4b/0x53
</TASK>
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.15 | |
| debian | debian_linux | 11.0 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"arch/x86/kvm/x86.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "56d997b257075951a46663970cd350cd5e34c041",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "0357c8406dfa09430dd9858ebe813feb65524b6e",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "8a3df0aa1087a89f5ce55f4aba816bfcb1ecf1be",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "7bc5c360375d28ba5ef6298b0d53e735c81d66a1",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "f5cbe725b7477b4cd677be1b86b4e08f90572997",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "592e040572f216d916f465047c8ce4a308fcca44",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
},
{
"lessThan": "ef01cac401f18647d62720cf773d7bb0541827da",
"status": "affected",
"version": "1c96dcceaeb3a99aaf0d548eef2223e0b02a7e40",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"arch/x86/kvm/x86.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"lessThan": "5.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.135",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.88",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.24",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"version": "6.14.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "29C64220-D258-41B3-A931-B8C3456115E5",
"versionEndExcluding": "6.1.135",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD",
"versionEndExcluding": "6.6.88",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1D35A8A8-F3EC-45E6-AD37-1F154B27529D",
"versionEndExcluding": "6.12.24",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4A475784-BF3B-4514-81EE-49C8522FB24A",
"versionEndExcluding": "6.13.12",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "483E2E15-2135-4EC6-AB64-16282C5EF704",
"versionEndExcluding": "6.14.3",
"versionStartIncluding": "6.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*",
"matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1",
"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\nKVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses\n\nAcquire a lock on kvm-\u003esrcu when userspace is getting MP state to handle a\nrather extreme edge case where \"accepting\" APIC events, i.e. processing\npending INIT or SIPI, can trigger accesses to guest memory. If the vCPU\nis in L2 with INIT *and* a TRIPLE_FAULT request pending, then getting MP\nstate will trigger a nested VM-Exit by way of -\u003echeck_nested_events(), and\nemuating the nested VM-Exit can access guest memory.\n\nThe splat was originally hit by syzkaller on a Google-internal kernel, and\nreproduced on an upstream kernel by hacking the triple_fault_event_test\nselftest to stuff a pending INIT, store an MSR on VM-Exit (to generate a\nmemory access on VMX), and do vcpu_mp_state_get() to trigger the scenario.\n\n =============================\n WARNING: suspicious RCU usage\n 6.14.0-rc3-b112d356288b-vmx/pi_lockdep_false_pos-lock #3 Not tainted\n -----------------------------\n include/linux/kvm_host.h:1058 suspicious rcu_dereference_check() usage!\n\n other info that might help us debug this:\n\n rcu_scheduler_active = 2, debug_locks = 1\n 1 lock held by triple_fault_ev/1256:\n #0: ffff88810df5a330 (\u0026vcpu-\u003emutex){+.+.}-{4:4}, at: kvm_vcpu_ioctl+0x8b/0x9a0 [kvm]\n\n stack backtrace:\n CPU: 11 UID: 1000 PID: 1256 Comm: triple_fault_ev Not tainted 6.14.0-rc3-b112d356288b-vmx #3\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7f/0x90\n lockdep_rcu_suspicious+0x144/0x190\n kvm_vcpu_gfn_to_memslot+0x156/0x180 [kvm]\n kvm_vcpu_read_guest+0x3e/0x90 [kvm]\n read_and_check_msr_entry+0x2e/0x180 [kvm_intel]\n __nested_vmx_vmexit+0x550/0xde0 [kvm_intel]\n kvm_check_nested_events+0x1b/0x30 [kvm]\n kvm_apic_accept_events+0x33/0x100 [kvm]\n kvm_arch_vcpu_ioctl_get_mpstate+0x30/0x1d0 [kvm]\n kvm_vcpu_ioctl+0x33e/0x9a0 [kvm]\n __x64_sys_ioctl+0x8b/0xb0\n do_syscall_64+0x6c/0x170\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n \u003c/TASK\u003e"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86: Adquisici\u00f3n de SRCU en KVM_GET_MP_STATE para proteger los accesos a la memoria del invitado. Adquisici\u00f3n de un bloqueo en kvm-\u0026gt;srcu cuando el espacio de usuario obtiene el estado MP para gestionar un caso extremo en el que la \"aceptaci\u00f3n\" de eventos APIC, es decir, el procesamiento de INIT o SIPI pendientes, puede desencadenar accesos a la memoria del invitado. Si la vCPU est\u00e1 en L2 con INIT *y* una solicitud TRIPLE_FAULT pendiente, obtener el estado MP activar\u00e1 una salida de m\u00e1quina virtual anidada mediante -\u0026gt;check_nested_events(), y la emulaci\u00f3n de la salida de m\u00e1quina virtual anidada puede acceder a la memoria del invitado. El splat fue alcanzado originalmente por syzkaller en un kernel interno de Google, y reproducido en un kernel ascendente hackeando la autoprueba triple_fault_event_test para rellenar un INIT pendiente, almacenar un MSR en VM-Exit (para generar un acceso a memoria en VMX), y hacer vcpu_mp_state_get() para activar el escenario. ============================== ADVERTENCIA: uso sospechoso de RCU 6.14.0-rc3-b112d356288b-vmx/pi_lockdep_false_pos-lock #3 No contaminado ----------------------------- include/linux/kvm_host.h:1058 \u00a1uso sospechoso de rcu_dereference_check()! Otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: rcu_scheduler_active = 2, debug_locks = 1 1 bloqueo mantenido por triple_fault_ev/1256: #0: ffff88810df5a330 (\u0026amp;vcpu-\u0026gt;mutex){+.+.}-{4:4}, en: kvm_vcpu_ioctl+0x8b/0x9a0 [kvm] seguimiento de pila: CPU: 11 UID: 1000 PID: 1256 Comm: triple_fault_ev No contaminado 6.14.0-rc3-b112d356288b-vmx #3 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 Seguimiento de llamadas: dump_stack_lvl+0x7f/0x90 lockdep_rcu_suspicious+0x144/0x190 kvm_vcpu_gfn_to_memslot+0x156/0x180 [kvm] kvm_vcpu_read_guest+0x3e/0x90 [kvm] read_and_check_msr_entry+0x2e/0x180 [kvm_intel] __nested_vmx_vmexit+0x550/0xde0 [kvm_intel] kvm_check_nested_events+0x1b/0x30 [kvm] kvm_apic_accept_events+0x33/0x100 [kvm] kvm_arch_vcpu_ioctl_get_mpstate+0x30/0x1d0 [kvm] kvm_vcpu_ioctl+0x33e/0x9a0 [kvm] __x64_sys_ioctl+0x8b/0xb0 do_syscall_64+0x6c/0x170 entry_SYSCALL_64_after_hwframe+0x4b/0x53 "
}
],
"id": "CVE-2025-23141",
"lastModified": "2026-07-30T06:22:16.450",
"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"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-05-01T13:15:49.910",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0357c8406dfa09430dd9858ebe813feb65524b6e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/56d997b257075951a46663970cd350cd5e34c041"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/592e040572f216d916f465047c8ce4a308fcca44"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/7bc5c360375d28ba5ef6298b0d53e735c81d66a1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/8a3df0aa1087a89f5ce55f4aba816bfcb1ecf1be"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/ef01cac401f18647d62720cf773d7bb0541827da"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/f5cbe725b7477b4cd677be1b86b4e08f90572997"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
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.
Loading…