CVE-2026-68400

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Source
https://cve.org/CVERecord?id=CVE-2026-68400
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68400.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-68400
Downstream
Published
2026-08-10T12:04:19.952Z
Modified
2026-08-14T04:04:12.577154567Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68400.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
113580530ee7dc61e668b641d657920734533b9f
Fixed
b39b08e6bee812514b449dc874076890e6b871a0
Fixed
8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66
Fixed
b4d961351aa84fdf0148783fb1f3a1391b8a0adb

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68400.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68400.json"