firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation
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`.
CVE-2026-68400
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68400
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "113580530ee7dc61e668b641d657920734533b9f",
"lessThan": "6e902bea625b710f8bf2f40b4ae4b14fa6a33f13",
"versionType": "git"
},
{
"status": "affected",
"version": "113580530ee7dc61e668b641d657920734533b9f",
"lessThan": "b39b08e6bee812514b449dc874076890e6b871a0",
"versionType": "git"
},
{
"status": "affected",
"version": "113580530ee7dc61e668b641d657920734533b9f",
"lessThan": "8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66",
"versionType": "git"
},
{
"status": "affected",
"version": "113580530ee7dc61e668b641d657920734533b9f",
"lessThan": "b4d961351aa84fdf0148783fb1f3a1391b8a0adb",
"versionType": "git"
}
],
"programFiles": [
"drivers/firmware/arm_ffa/driver.c",
"include/linux/arm_ffa.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/firmware/arm_ffa/driver.c",
"include/linux/arm_ffa.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68400
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46470 · Revision 1
- Added to Heist Feed
- Publisher date