Vulnerability in Linux

CVE-2026-31553

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc() Using "(u64 __user *)hva + offset" to get the virtual addresses of S1/S2 descriptors looks really wrong, if offset is not zero. What we want to get for swapping is hva + offset, not hva + offset*8. ;-) Fix it.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (5.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-31553: held from 0.001 to 0.002.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

  • Linux — versions f6927b41d57390c597a126063e2e518911976878, 6.19, 0
  • Linux Kernel — versions 6.19, 7.0

References

Frequently asked questions

What is CVE-2026-31553?
CVE-2026-31553 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-04-24.
How severe is CVE-2026-31553?
High severity. CVSS v3 base score is 8.8 out of 10.