High severity8.8NVD Advisory· Published Aug 26, 2026· Updated Aug 27, 2026

CVE-2026-80552

Description

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

s390/vfio_ccw: Ensure index for read/write regions are within range

The introduction of the capability chain rightly clamped the region indexes to the range of the capabilities itself, but neglected to do so for the existing read/write regions which should also be enforced.

Affected products

Linux/Kernelllm-fuzzy
osv-coords
pkg:linux/kernel
Range: >= 5.2.0, < 6.1.184

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/649badf3a2fd8929e40198603a2cb21b74c21700nvd
git.kernel.org/stable/c/79ea5e0c4c8a9842ae85f45062d947b3297dfc07nvd
git.kernel.org/stable/c/988d9b5be3c2c4baf9457ce8e11b477e13eb9fcfnvd
git.kernel.org/stable/c/9f5f9a78fedc45bc29d6a0a64e3a3472361afae5nvd
git.kernel.org/stable/c/d3b1e38404b22df5a1f93019f2bb656feaad5ae3nvd
git.kernel.org/stable/c/d597fa1273802941c7801202135976fecc29672bnvd

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cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000