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CVE-2026-68474

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access() spufs_mem_mmap_access() computes the local store offset as a…

Published Aug 15, 2026EPSS 0.16%

Overview

CVE-2026-68474 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access()

spufs_mem_mmap_access() computes the local store offset as

address - vma->vm_start, but bounds-checks it against vma->vm_end

instead of the local store size. On 64-bit, offset is always well

below vma->vm_end, so the clamp never fires and len stays unbounded

against the LS_SIZE buffer returned by ctx->ops->get_ls().

Reject offsets at or beyond LS_SIZE and clamp len to the remaining

space, mirroring the guard already used by spufs_mem_mmap_fault() and

spufs_ps_fault().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/3c1e92f75e11a11492b8cb901fceeb9f16ae6415Refgit.kernel.org/stable/c/47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6Refgit.kernel.org/stable/c/4efa313b15925bdd864784865d6585174979294bRefgit.kernel.org/stable/c/913feef74354c653f10ecd4631df7618a95c49c2Refgit.kernel.org/stable/c/9d3569bfdceda69d5ffd5148901e57b69954d9efRefgit.kernel.org/stable/c/aa7aa8ba40c089762d821e3987aaae19e1f5705cRefgit.kernel.org/stable/c/d479a7711f8ff127946467b910d947bd971b94edRefgit.kernel.org/stable/c/d97a8f3668949a8a9d1f6202f8c53446f2d89aa7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68474?

CVE-2026-68474 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-68474?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-68474?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-68474?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68474 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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