CVE-2026-64520 – firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies

CVE ID :CVE-2026-64520

Published : July 25, 2026, 9:14 a.m. | 37 minutes ago

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

firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies

The register-based PARTITION_INFO_GET path trusted the firmware-provided
indices when copying partition descriptors into the caller buffer.
Reject inconsistent counts or index progressions so the copy loop cannot
write past the allocated array.

(fixed cur_idx when exactly one descriptor in the first fragment)

Severity: 0.0 | NA

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