Vulnerability Description
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.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b
- https://git.kernel.org/stable/c/3383ffb7ef937317361713ffcc21921a7848511a
- https://git.kernel.org/stable/c/cf5708c9d78c98214c62b1e5d049cd527a543b8e
FAQ
What is CVE-2026-68401?
CVE-2026-68401 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 f...
How severe is CVE-2026-68401?
CVE-2026-68401 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-68401?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.