CVE-2026-80547
s390/vfio_ccw: Implement a crw lock
Description
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Implement a crw lock Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware. Implement a lock to manage the list of those payloads, to ensure they are read cohesively.
INFO
Published Date :
Aug. 26, 2026, 3:17 p.m.
Last Modified :
Aug. 27, 2026, 1:18 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Implement a lock for the CRW region payload list.
- Ensure cohesive reads from asynchronous hardware events.
- Review and test the synchronization mechanism.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-80547.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-80547 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-80547
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-80547 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-80547 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 27, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80547.json">CVE-2026-80547</a> Added Reference https://git.kernel.org/stable/c/0edd222730a9d7ec98368aaf1d40ee2d8d862e61 Added Reference https://git.kernel.org/stable/c/3c94d4179bcc19e01b28db634c07a58b28116209 Added Reference https://git.kernel.org/stable/c/a3d60ae24183eee352c8e87a0ff94c97cd87f156 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 26, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Implement a crw lock Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware. Implement a lock to manage the list of those payloads, to ensure they are read cohesively. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80547.json">CVE-2026-80547</a> Added Reference https://git.kernel.org/stable/c/16b0798024c0e9117e395829ddbbe70981c79d9c Added Reference https://git.kernel.org/stable/c/49fa26b0df009dc1f420980bd71780e70615b83b Added Reference https://git.kernel.org/stable/c/7902be374cbfc11c3435e1e87bf22195bf06a558 Added Reference https://git.kernel.org/stable/c/c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9