HighFix available
firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.1.191, 6.12.114, 6.18.42, 6.6.160, 7.1.6
- CVEs
- CVE-2026-68401
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:23 UTC · Revision 1
Source evidence
firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
core-osv · Original sourcePublished 10 Aug 2026, 12:04 UTC
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.
osv:CVE-2026-68401
Kernel
Fixed versions: 6.1.191, 6.6.160, 6.12.114, 6.18.42, 7.1.6
Complete source record
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