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CVE-2026-53354

Estado: AnalizadaAlta (8.8)—

In the Linux kernel, the following vulnerability has been resolved:

arm64: errata: Mitigate TLBI errata on various Arm CPUs

A number of CPUs developed by Arm suffer from errata whereby a broadcast TLBI;DSB sequence may complete before the global observation of writes which are translated by an affected TLB entry.

These errata ONLY affect the completion of memory accesses which have been translated by an invalidated TLB entry, and these errata DO NOT affect the actual invalidation of TLB entries. TLB entries are removed correctly.

This issue has been assigned CVE ID CVE-2025-10263.

To mitigate this issue, Arm recommends that software follows any affected TLBI;DSB sequence with an additional TLBI;DSB, which will ensure that all memory write effects affected by the first TLBI have been globally observed.

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The additional TLBI can use any operation that is broadcast to affected CPUs, and the additional DSB can use any option that is sufficient to complete the additional TLBI.

The ARM64_WORKAROUND_REPEAT_TLBI workaround is sufficient to mitigate the issue. Enable this workaround for affected CPUs, and update the silicon errata documentation accordingly.

Note that due to the manner in which Arm develops IP and tracks errata, some CPUs share a common erratum number.

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso local sin interacción (AV:L/PR:L/UI:N) permite escalada de privilegios explotando errata de TLBI en ARM64. La vulnerabilidad afecta escrituras en memoria traducidas por entradas TLB invalidadas, permitiendo manipulación de datos y denegación de servicio.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: errata: Mitigate TLBI errata on various Arm CPUs\n\nA number of CPUs developed by Arm suffer from errata whereby a broadcast\nTLBI;DSB sequence may complete before the global observation of writes\nwhich are translated by an affected TLB entry.\n\nThese errata ONLY affect the completion of memory accesses which have\nbeen translated by an invalidated TLB entry, and these errata DO NOT\naffect the actual invalidation of TLB entries. TLB entries are removed\ncorrectly.\n\nThis issue has been assigned CVE ID CVE-2025-10263.\n\nTo mitigate this issue, Arm recommends that software follows any\naffected TLBI;DSB sequence with an additional TLBI;DSB, which will\nensure that all memory write effects affected by the first TLBI have\nbeen globally observed. The additional TLBI can use any operation that\nis broadcast to affected CPUs, and the additional DSB can use any option\nthat is sufficient to complete the additional TLBI.\n\nThe ARM64_WORKAROUND_REPEAT_TLBI workaround is sufficient to mitigate\nthe issue. Enable this workaround for affected CPUs, and update the\nsilicon errata documentation accordingly.\n\nNote that due to the manner in which Arm develops IP and tracks errata,\nsome CPUs share a common erratum number."
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