CVE-2023-54296
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
KVM: SVM: Get source vCPUs from source VM for SEV-ES intrahost migration
Fix a goof where KVM tries to grab source vCPUs from the destination VM when doing intrahost migration. Grabbing the wrong vCPU not only hoses the guest, it also crashes the host due to the VMSA pointer being left NULL.
Detalles técnicos trazas, registros y código del informe original
BUG: unable to handle page fault for address: ffffe38687000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 39 PID: 17143 Comm: sev_migrate_tes Tainted: GO 6.5.0-smp--fff2e47e6c3b-next #151 Hardware name: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 34.28.0 07/10/2023 RIP: 0010:__free_pages+0x15/0xd0 RSP: 0018:ffff923fcf6e3c78 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffe38687000000 RCX: 0000000000000100 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffe38687000000 RBP: ffff923fcf6e3c88 R08: ffff923fcafb0000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff83619b90 R12: ffff923fa9540000 R13: 0000000000080007 R14: ffff923f6d35d000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff929d0d7c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffe38687000000 CR3: 0000005224c34005 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: <TASK> sev_free_vcpu+0xcb/0x110 [kvm_amd] svm_vcpu_free+0x75/0xf0 [kvm_amd] kvm_arch_vcpu_destroy+0x36/0x140 [kvm] kvm_destroy_vcpus+0x67/0x100 [kvm] kvm_arch_destroy_vm+0x161/0x1d0 [kvm] kvm_put_kvm+0x276/0x560 [kvm] kvm_vm_release+0x25/0x30 [kvm] __fput+0x106/0x280 ____fput+0x12/0x20 task_work_run+0x86/0xb0 do_exit+0x2e3/0x9c0 do_group_exit+0xb1/0xc0 __x64_sys_exit_group+0x1b/0x20 do_syscall_64+0x41/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK> CR2: ffffe38687000000
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 6/10/2026
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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-54296",
"cveTags": [],
"metrics": {},
"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": "6defa24d3b12bbd418bc8526dea1cbc605265c06",
"lessThan": "5c18ace750e4d4d58d7da02d1c669bf21c824158",
"versionType": "git"
},
{
"status": "affected",
"version": "6defa24d3b12bbd418bc8526dea1cbc605265c06",
"lessThan": "2ee4b180d51b12a45bdd3264629719ef6a572a73",
"versionType": "git"
},
{
"status": "affected",
"version": "6defa24d3b12bbd418bc8526dea1cbc605265c06",
"lessThan": "f1187ef24eb8f36e8ad8106d22615ceddeea6097",
"versionType": "git"
},
{
"status": "affected",
"version": "229334a8b1d0d5e60d3bdd091bbc4552d5321c97",
"versionType": "git"
},
{
"status": "affected",
"version": "5.18.8",
"lessThan": "5.19",
"versionType": "semver"
}
],
"programFiles": [
"arch/x86/kvm/svm/sev.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.54",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.5.4",
"versionType": "semver",
"lessThanOrEqual": "6.5.*"
},
{
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kvm/svm/sev.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-12-30T13:16:18.697",
"references": [
{
"url": "https://git.kernel.org/stable/c/2ee4b180d51b12a45bdd3264629719ef6a572a73",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5c18ace750e4d4d58d7da02d1c669bf21c824158",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f1187ef24eb8f36e8ad8106d22615ceddeea6097",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SVM: Get source vCPUs from source VM for SEV-ES intrahost migration\n\nFix a goof where KVM tries to grab source vCPUs from the destination VM\nwhen doing intrahost migration. Grabbing the wrong vCPU not only hoses\nthe guest, it also crashes the host due to the VMSA pointer being left\nNULL.\n\n BUG: unable to handle page fault for address: ffffe38687000000\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] SMP NOPTI\n CPU: 39 PID: 17143 Comm: sev_migrate_tes Tainted: GO 6.5.0-smp--fff2e47e6c3b-next #151\n Hardware name: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 34.28.0 07/10/2023\n RIP: 0010:__free_pages+0x15/0xd0\n RSP: 0018:ffff923fcf6e3c78 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: ffffe38687000000 RCX: 0000000000000100\n RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffe38687000000\n RBP: ffff923fcf6e3c88 R08: ffff923fcafb0000 R09: 0000000000000000\n R10: 0000000000000000 R11: ffffffff83619b90 R12: ffff923fa9540000\n R13: 0000000000080007 R14: ffff923f6d35d000 R15: 0000000000000000\n FS: 0000000000000000(0000) GS:ffff929d0d7c0000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffffe38687000000 CR3: 0000005224c34005 CR4: 0000000000770ee0\n PKRU: 55555554\n Call Trace:\n <TASK>\n sev_free_vcpu+0xcb/0x110 [kvm_amd]\n svm_vcpu_free+0x75/0xf0 [kvm_amd]\n kvm_arch_vcpu_destroy+0x36/0x140 [kvm]\n kvm_destroy_vcpus+0x67/0x100 [kvm]\n kvm_arch_destroy_vm+0x161/0x1d0 [kvm]\n kvm_put_kvm+0x276/0x560 [kvm]\n kvm_vm_release+0x25/0x30 [kvm]\n __fput+0x106/0x280\n ____fput+0x12/0x20\n task_work_run+0x86/0xb0\n do_exit+0x2e3/0x9c0\n do_group_exit+0xb1/0xc0\n __x64_sys_exit_group+0x1b/0x20\n do_syscall_64+0x41/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n </TASK>\n CR2: ffffe38687000000"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nKVM: SVM: Obtener vCPUs de origen de la VM de origen para la migración intra-host SEV-ES\n\nCorrige un error donde KVM intenta tomar vCPUs de origen de la VM de destino al realizar una migración intra-host. Tomar la vCPU incorrecta no solo daña al invitado, sino que también provoca la caída del host debido a que el puntero VMSA se deja como NULL.\n\n BUG: no se puede manejar el fallo de página para la dirección: ffffe38687000000\n #PF: acceso de lectura de supervisor en modo kernel\n #PF: error_code(0x0000) - página no presente\n PGD 0 P4D 0\n Oops: 0000 [#1] SMP NOPTI\n CPU: 39 PID: 17143 Comm: sev_migrate_tes Tainted: GO 6.5.0-smp--fff2e47e6c3b-next #151\n Nombre del hardware: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 34.28.0 07/10/2023\n RIP: 0010:__free_pages+0x15/0xd0\n RSP: 0018:ffff923fcf6e3c78 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: ffffe38687000000 RCX: 0000000000000100\n RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffe38687000000\n RBP: ffff923fcf6e3c88 R08: ffff923fcafb0000 R09: 0000000000000000\n R10: 0000000000000000 R11: ffffffff83619b90 R12: ffff923fa9540000\n R13: 0000000000080007 R14: ffff923f6d35d000 R15: 0000000000000000\n FS: 0000000000000000(0000) GS:ffff929d0d7c0000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffffe38687000000 CR3: 0000005224c34005 CR4: 0000000000770ee0\n PKRU: 55555554\n Traza de llamadas:\n \n sev_free_vcpu+0xcb/0x110 [kvm_amd]\n svm_vcpu_free+0x75/0xf0 [kvm_amd]\n kvm_arch_vcpu_destroy+0x36/0x140 [kvm]\n kvm_destroy_vcpus+0x67/0x100 [kvm]\n kvm_arch_destroy_vm+0x161/0x1d0 [kvm]\n kvm_put_kvm+0x276/0x560 [kvm]\n kvm_vm_release+0x25/0x30 [kvm]\n __fput+0x106/0x280\n ____fput+0x12/0x20\n task_work_run+0x86/0xb0\n do_exit+0x2e3/0x9c0\n do_group_exit+0xb1/0xc0\n __x64_sys_exit_group+0x1b/0x20\n do_syscall_64+0x41/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n \n CR2: ffffe38687000000"
}
],
"lastModified": "2026-06-17T06:47:10.613",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}