firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Sashiko (locally) reports multiple out-of-bound issues in ffa_setup_and_transmit: 1) Writing ep_mem_access->reserved can write out of bounds for FFA versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case while reserved has an offset of 24. Instead of zeroing fields, memset the struct to zero first based on the FFA version. 2) Make sure there is enough size to write constituents. While at it, convert the only sizeof() in the driver that uses a type instead of variable.
CVE-2026-68401
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-2026-68401
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": "111a833dc5cbef3d05b2a796a7e23cb7f6ff2192",
"lessThan": "d312a71b19bb83803c8d1372bc042bd36db657f7",
"versionType": "git"
},
{
"status": "affected",
"version": "111a833dc5cbef3d05b2a796a7e23cb7f6ff2192",
"lessThan": "00bef9d0f9e787f56ff4699d3b577983ff8b7f24",
"versionType": "git"
},
{
"status": "affected",
"version": "111a833dc5cbef3d05b2a796a7e23cb7f6ff2192",
"lessThan": "cf5708c9d78c98214c62b1e5d049cd527a543b8e",
"versionType": "git"
},
{
"status": "affected",
"version": "111a833dc5cbef3d05b2a796a7e23cb7f6ff2192",
"lessThan": "27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b",
"versionType": "git"
},
{
"status": "affected",
"version": "111a833dc5cbef3d05b2a796a7e23cb7f6ff2192",
"lessThan": "3383ffb7ef937317361713ffcc21921a7848511a",
"versionType": "git"
},
{
"status": "affected",
"version": "28ebfb74fbf513e0c7cd2674d8c2400ee0220d18",
"versionType": "git"
},
{
"status": "affected",
"version": "22157f74458106c5900dbd938eb44623c22d97a0",
"versionType": "git"
},
{
"status": "affected",
"version": "b77ec23b6df41c48e88735230e11caec56163630",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.114",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.31",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.3.5",
"lessThan": "6.4",
"versionType": "semver"
}
],
"programFiles": [
"drivers/firmware/arm_ffa/driver.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"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"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68401
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46471 · Revision 1
- Added to Heist Feed
- Publisher date