CVE-2026-68474
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().
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/3c1e92f75e11a11492b8cb901fceeb9f16ae6415
- https://git.kernel.org/stable/c/47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6
- https://git.kernel.org/stable/c/4efa313b15925bdd864784865d6585174979294b
- https://git.kernel.org/stable/c/913feef74354c653f10ecd4631df7618a95c49c2
- https://git.kernel.org/stable/c/9d3569bfdceda69d5ffd5148901e57b69954d9ef
- https://git.kernel.org/stable/c/aa7aa8ba40c089762d821e3987aaae19e1f5705c
- https://git.kernel.org/stable/c/d479a7711f8ff127946467b910d947bd971b94ed
- https://git.kernel.org/stable/c/d97a8f3668949a8a9d1f6202f8c53446f2d89aa7
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.