Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k-debug-modules (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-KERNELRT64KDEBUGMODULES-18642691
- published12 Aug 2026
- disclosed10 Aug 2026
Introduced: 10 Aug 2026
NewCVE-2026-68401 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-debug-modules package and not the kernel-rt-64k-debug-modules package as distributed by RHEL.
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:
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.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2513215
- https://access.redhat.com/security/cve/CVE-2026-68401
- https://git.kernel.org/stable/c/27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b
- https://git.kernel.org/stable/c/3383ffb7ef937317361713ffcc21921a7848511a
- https://git.kernel.org/stable/c/cf5708c9d78c98214c62b1e5d049cd527a543b8e