CVE-2026-68401firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
Updated under an hour ago ()
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 before cf5708c9d78c98214c62b1e5d049cd527a543b8e; 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 builds before 27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b; from 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 before 3383ffb7ef937317361713ffcc21921a7848511a; 28ebfb74fbf513e0c7cd2674d8c2400ee0220d18; 22157f74458106c5900dbd938eb44623c22d97a0; b77ec23b6df41c48e88735230e11caec56163630; from 5.15.114 before 5.16; from 6.1.31 before 6.2; and 1 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/cf5708c9d78c98214c62b1e5d049cd527a543b8e
- https://git.kernel.org/stable/c/27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b
- https://git.kernel.org/stable/c/3383ffb7ef937317361713ffcc21921a7848511a
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.