CVEvulnerability
CVE-2026-68400
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-10
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation
Use the descriptor's `ep_mem_offset` to calculate the start of the endpoint
memory access array and to comply with the FF-A spec instead of defaulting
to `sizeof(struct ffa_mem_region)`.
This requires moving `ffa_mem_region_additional_setup()` earlier in the setup
flow.
Also, add sanity checks to ensure the calculated descriptor offsets do not
exceed `max_fragsize`.
References
- https://git.kernel.org/stable/c/6e902bea625b710f8bf2f40b4ae4b14fa6a33f13 git.kernel.org
- https://git.kernel.org/stable/c/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66 git.kernel.org
- https://git.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0 git.kernel.org
- https://git.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb git.kernel.org