CVE-2026-89925
KVM: s390: Fix memory leak in guest debug handling
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory leak in guest debug handling bp_data is freed only for the error case by kfree(bp_data). Every successful KVM_SET_GUEST_DEBUG will leak bp_data.
INFO
Published Date :
Sept. 16, 2026, 11:17 a.m.
Last Modified :
Sept. 16, 2026, 11:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the KVM patch to fix the memory leak.
- Ensure bp_data is freed in all code paths.
- Update the Linux kernel to the latest secure version.
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-2026-89925.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-89925 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-2026-89925
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-2026-89925 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89925 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory leak in guest debug handling bp_data is freed only for the error case by kfree(bp_data). Every successful KVM_SET_GUEST_DEBUG will leak bp_data. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89925.json">CVE-2026-89925</a> Added Reference https://git.kernel.org/stable/c/121ea1de927c8b9bfdf53c31cad27b86d5de0293 Added Reference https://git.kernel.org/stable/c/39e7cebb889839b5762c9ad22e2d715b5883b288 Added Reference https://git.kernel.org/stable/c/44bf3792c10f4bb3de507391f1837e020d92eaa2 Added Reference https://git.kernel.org/stable/c/581be9f6085834188cef1ad2f07babf3b421e409 Added Reference https://git.kernel.org/stable/c/58b1b729a9f90c80b508fc3e2174cbc0ee50859e Added Reference https://git.kernel.org/stable/c/5940418e4232a2ff1d30ba12e0d213dbf48f0a83 Added Reference https://git.kernel.org/stable/c/9071f75cbde3bf46119cb28e92cfbef830c4bf97 Added Reference https://git.kernel.org/stable/c/fc2034c431adcbaabf5f8a01912358f07355349e