CVEvulnerability
CVE-2026-80551
9.3 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-08-26
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.3 CRITICAL — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/vfio_ccw: Ensure first IDAW remains constant
The first IDAW in a list does not need to be on a 2K/4K boundary
like all others, and so is read separately to accurately calculate
the size of the buffer needed to read the full IDAL.
Verify that the address found in the first IDAW is unchanged between
reads, to ensure a consistent set of IDAWs being worked with.
References
- https://git.kernel.org/stable/c/08ef2a82115690d6e229615872ac1731af732497 git.kernel.org
- https://git.kernel.org/stable/c/0d46c2565f173bcddcdcaf44a4f69789a20535e2 git.kernel.org
- https://git.kernel.org/stable/c/460b977a4e71cc319fdadf91c193ec3beaa57263 git.kernel.org
- https://git.kernel.org/stable/c/565bef268d75bf7df665bce6923a88cd0eb74592 git.kernel.org
- https://git.kernel.org/stable/c/fc59e9482117ebdccd6dc7fa8082f8b980fd021e git.kernel.org