Riskcovery

CVE-2026-68400

firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation

State
Published
Severity
7.8 High
Published
Aug 10, 2026
Updated
Oct 21, 2026
Reserved
Jul 30, 2026

Read the record on cve.org

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`.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 113580530ee7dc61e668b641d657920734533b9f to before 6e902bea625b710f8bf2f40b4ae4b14fa6a33f13Affected
  • 113580530ee7dc61e668b641d657920734533b9f to before b39b08e6bee812514b449dc874076890e6b871a0Affected
  • 113580530ee7dc61e668b641d657920734533b9f to before 8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66Affected
  • 113580530ee7dc61e668b641d657920734533b9f to before b4d961351aa84fdf0148783fb1f3a1391b8a0adbAffected
LinuxLinux
  • 6.7Affected
  • before 6.7Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.18.42 through 6.18.*Not affected
  • 7.1.6 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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