Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-80551

s390/vfio_ccw: Ensure first IDAW remains constant
Back to all
CVE

CVE-2026-80551

s390/vfio_ccw: Ensure first IDAW remains constant

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/08ef2a82115690d6e229615872ac1731af732497, https://git.kernel.org/stable/c/0d46c2565f173bcddcdcaf44a4f69789a20535e2, https://git.kernel.org/stable/c/460b977a4e71cc319fdadf91c193ec3beaa57263, https://git.kernel.org/stable/c/565bef268d75bf7df665bce6923a88cd0eb74592, https://git.kernel.org/stable/c/fc59e9482117ebdccd6dc7fa8082f8b980fd021e, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80551.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80551, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.00196%
EPSS Percentile
0.08473%
Introduced Version
01aa26c672c0eb771de4aaa2a8ccf6055778887b,5.3.0,6.7.0,6.13.0,6.19.0,0
Fix Available
565bef268d75bf7df665bce6923a88cd0eb74592,6.6.154,6.12.105,6.18.46,7.1.10,6.12.107-1~deb12u1,6.12.105-1,6.8.0-1036.39

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading