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CVE-2026-68401

Unknown

Last modified

CVE-2026-68401 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192, < cf5708c9d78c98214c62b1e5d049cd527a543b8e; >= 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192, < 27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b; >= 111a833dc5cbef3d05b2a796a7e23cb7f6ff2192, < 3383ffb7ef937317361713ffcc21921a7848511a; 28ebfb74fbf513e0c7cd2674d8c2400ee0220d18; 22157f74458106c5900dbd938eb44623c22d97a0; b77ec23b6df41c48e88735230e11caec56163630; >= 5.15.114, < 5.16; >= 6.1.31, < 6.2; >= 6.3.5, < 6.4
LinuxLinux6.4

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-68401?
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.
How severe is CVE-2026-68401?
Severity scoring for CVE-2026-68401 is pending analysis.
How do I fix CVE-2026-68401?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST