High 7.8Published Aug 10, 2026

CVE-2026-68400firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation

Updated under an hour ago (Oct 27, 2026, 5:23 PM ET)

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Exploited in the last 30 days

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`.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	113580530ee7dc61e668b641d657920734533b9f builds before 6e902bea625b710f8bf2f40b4ae4b14fa6a33f13; from 113580530ee7dc61e668b641d657920734533b9f before b39b08e6bee812514b449dc874076890e6b871a0; 113580530ee7dc61e668b641d657920734533b9f builds before 8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66; from 113580530ee7dc61e668b641d657920734533b9f before b4d961351aa84fdf0148783fb1f3a1391b8a0adb	CNA record

References

References

https://git.kernel.org/stable/c/6e902bea625b710f8bf2f40b4ae4b14fa6a33f13
https://git.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0
https://git.kernel.org/stable/c/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66
https://git.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.