CVE-2022-49154
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
KVM: SVM: fix panic on out-of-bounds guest IRQ
As guest_irq is coming from KVM_IRQFD API call, it may trigger crash in svm_update_pi_irte() due to out-of-bounds:
Vmx have been fix this in commit 3a8b0677fc61 (KVM: VMX: Do not BUG() on out-of-bounds guest IRQ), so we can just copy source from that to fix this.
Detalles técnicos trazas, registros y código del informe original
crash> bt
PID: 22218 TASK: ffff951a6ad74980 CPU: 73 COMMAND: "vcpu8"
#0 [ffffb1ba6707fa40] machine_kexec at ffffffff8565b397
#1 [ffffb1ba6707fa90] __crash_kexec at ffffffff85788a6d
#2 [ffffb1ba6707fb58] crash_kexec at ffffffff8578995d
#3 [ffffb1ba6707fb70] oops_end at ffffffff85623c0d
#4 [ffffb1ba6707fb90] no_context at ffffffff856692c9
#5 [ffffb1ba6707fbf8] exc_page_fault at ffffffff85f95b51
#6 [ffffb1ba6707fc50] asm_exc_page_fault at ffffffff86000ace
[exception RIP: svm_update_pi_irte+227]
RIP: ffffffffc0761b53 RSP: ffffb1ba6707fd08 RFLAGS: 00010086
RAX: ffffb1ba6707fd78 RBX: ffffb1ba66d91000 RCX: 0000000000000001
RDX: 00003c803f63f1c0 RSI: 000000000000019a RDI: ffffb1ba66db2ab8
RBP: 000000000000019a R8: 0000000000000040 R9: ffff94ca41b82200
R10: ffffffffffffffcf R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffffffffffcf R15: 000000000000005f
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffb1ba6707fdb8] kvm_irq_routing_update at ffffffffc09f19a1 [kvm]
#8 [ffffb1ba6707fde0] kvm_set_irq_routing at ffffffffc09f2133 [kvm]
#9 [ffffb1ba6707fe18] kvm_vm_ioctl at ffffffffc09ef544 [kvm]
RIP: 00007f143c36488b RSP: 00007f143a4e04b8 RFLAGS: 00000246
RAX: ffffffffffffffda RBX: 00007f05780041d0 RCX: 00007f143c36488b
RDX: 00007f05780041d0 RSI: 000000004008ae6a RDI: 0000000000000020
RBP: 00000000000004e8 R8: 0000000000000008 R9: 00007f05780041e0
R10: 00007f0578004560 R11: 0000000000000246 R12: 00000000000004e0
R13: 000000000000001a R14: 00007f1424001c60 R15: 00007f0578003bc0
ORIG_RAX: 0000000000000010 CS: 0033 SS: 002bCVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 19
- Fecha de la puntuación: 5/10/2026
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 (1)
CWE
- CWE-617
Referencias
- https://git.kernel.org/stable/c/0fb470eb48892e131d10aa3be6915239e65758f3
- https://git.kernel.org/stable/c/3fa2d747960521a646fc1aad7aea82e95e139a68
- https://git.kernel.org/stable/c/a6ffdebfb6a9c2ffeed902b544b96fe67498210e
- https://git.kernel.org/stable/c/a80ced6ea514000d34bf1239d47553de0d1ee89e
- https://git.kernel.org/stable/c/e4d153d53d9648513481eb4ef8c212e7f1f8173d
JSON original (NVD)
Mostrar
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"attackComplexity": "LOW",
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"version": "0",
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"published": "2025-02-26T07:00:52.627",
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"vulnStatus": "Modified",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-617"
}
]
}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SVM: fix panic on out-of-bounds guest IRQ\n\nAs guest_irq is coming from KVM_IRQFD API call, it may trigger\ncrash in svm_update_pi_irte() due to out-of-bounds:\n\ncrash> bt\nPID: 22218 TASK: ffff951a6ad74980 CPU: 73 COMMAND: \"vcpu8\"\n #0 [ffffb1ba6707fa40] machine_kexec at ffffffff8565b397\n #1 [ffffb1ba6707fa90] __crash_kexec at ffffffff85788a6d\n #2 [ffffb1ba6707fb58] crash_kexec at ffffffff8578995d\n #3 [ffffb1ba6707fb70] oops_end at ffffffff85623c0d\n #4 [ffffb1ba6707fb90] no_context at ffffffff856692c9\n #5 [ffffb1ba6707fbf8] exc_page_fault at ffffffff85f95b51\n #6 [ffffb1ba6707fc50] asm_exc_page_fault at ffffffff86000ace\n [exception RIP: svm_update_pi_irte+227]\n RIP: ffffffffc0761b53 RSP: ffffb1ba6707fd08 RFLAGS: 00010086\n RAX: ffffb1ba6707fd78 RBX: ffffb1ba66d91000 RCX: 0000000000000001\n RDX: 00003c803f63f1c0 RSI: 000000000000019a RDI: ffffb1ba66db2ab8\n RBP: 000000000000019a R8: 0000000000000040 R9: ffff94ca41b82200\n R10: ffffffffffffffcf R11: 0000000000000001 R12: 0000000000000001\n R13: 0000000000000001 R14: ffffffffffffffcf R15: 000000000000005f\n ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018\n #7 [ffffb1ba6707fdb8] kvm_irq_routing_update at ffffffffc09f19a1 [kvm]\n #8 [ffffb1ba6707fde0] kvm_set_irq_routing at ffffffffc09f2133 [kvm]\n #9 [ffffb1ba6707fe18] kvm_vm_ioctl at ffffffffc09ef544 [kvm]\n RIP: 00007f143c36488b RSP: 00007f143a4e04b8 RFLAGS: 00000246\n RAX: ffffffffffffffda RBX: 00007f05780041d0 RCX: 00007f143c36488b\n RDX: 00007f05780041d0 RSI: 000000004008ae6a RDI: 0000000000000020\n RBP: 00000000000004e8 R8: 0000000000000008 R9: 00007f05780041e0\n R10: 00007f0578004560 R11: 0000000000000246 R12: 00000000000004e0\n R13: 000000000000001a R14: 00007f1424001c60 R15: 00007f0578003bc0\n ORIG_RAX: 0000000000000010 CS: 0033 SS: 002b\n\nVmx have been fix this in commit 3a8b0677fc61 (KVM: VMX: Do not BUG() on\nout-of-bounds guest IRQ), so we can just copy source from that to fix\nthis."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: SVM: se corrige el pánico en la IRQ de invitado fuera de los límites Como guest_irq proviene de la llamada API KVM_IRQFD, puede provocar un bloqueo en svm_update_pi_irte() debido a fuera de los límites: crash> bt PID: 22218 TAREA: ffff951a6ad74980 CPU: 73 COMANDO: \"vcpu8\" #0 [ffffb1ba6707fa40] machine_kexec at ffffffff8565b397 #1 [ffffb1ba6707fa90] __crash_kexec at ffffffff85788a6d #2 [ffffb1ba6707fb58] crash_kexec at ffffffff8578995d #3 [ffffb1ba6707fb70] oops_end en ffffffff85623c0d #4 [ffffb1ba6707fb90] no_context en ffffffff856692c9 #5 [ffffb1ba6707fbf8] exc_page_fault en ffffffff85f95b51 #6 [ffffb1ba6707fc50] asm_exc_page_fault en ffffffff86000ace [excepción RIP: svm_update_pi_irte+227] RIP: ffffffffc0761b53 RSP: ffffb1ba6707fd08 RFLAGS: 00010086 RAX: ffffb1ba6707fd78 RBX: ffffb1ba66d91000 RCX: 0000000000000001 RDX: 00003c803f63f1c0 RSI: 000000000000019a RDI: ffffb1ba66db2ab8 RBP: 000000000000019a R8: 0000000000000040 R9: ffff94ca41b82200 R10: ffffffffffffffcf R11: 0000000000000001 R12: 00000000000000001 R13: 0000000000000001 R14: ffffffffffffffcf R15: 0000000000000005f ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffffb1ba6707fdb8] actualización de enrutamiento irq kvm en ffffffffc09f19a1 [kvm] #8 [ffffb1ba6707fde0] enrutamiento irq kvm_establecido en ffffffffc09f2133 [kvm] #9 [ffffb1ba6707fe18] kvm_vm_ioctl en ffffffffc09ef544 [kvm] RIP: 00007f143c36488b RSP: 00007f143a4e04b8 RFLAGS: 00000246 RAX: ffffffffffffffda RBX: 00007f05780041d0 RCX: 00007f143c36488b RDX: 00007f05780041d0 RSI: 000000004008ae6a RDI: 0000000000000020 RBP: 00000000000004e8 R8: 0000000000000008 R9: 00007f05780041e0 R10: 00007f0578004560 R11: 0000000000000246 R12: 00000000000004e0 R13: 000000000000001a R14: 00007f1424001c60 R15: 00007f0578003bc0 ORIG_RAX: 0000000000000010 CS: 0033 SS: 002b Vmx ha solucionado esto en el commit 3a8b0677fc61 (KVM: VMX: No BUG() en IRQ de invitado fuera de los límites), por lo que podemos simplemente copiar la fuente de allí para solucionarlo."
}
],
"lastModified": "2026-08-04T10:17:36.600",
"configurations": [
{
"nodes": [
{
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}