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)
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 3
https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95
416baaa9-dc9f-4396-8d5f-8c081fb06d67