CVE-2026-72290
KVM: s390: pci: Fix GISC refcount leak on AIF enable failure
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the Linux kernel patch.
- Unregister GISC on error unwind path.
- Ensure proper resource management.
- Update KVM for s390 PCI.
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-2026-72290.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72290 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-2026-72290
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-2026-72290 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72290 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. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '3882224b0e714f34de91e5f28307c5d3fccfe8f8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6e69317cd44a2f21f8f7a9d93eb3220e868adfa8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6cd6e1c978784eec9032e2fe94a53e62b674fe3e', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '5fb75c5272950b3ebe8bdee7abfdafd44f38313b', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': 'adce12bb0e0dc82d1d6f0821c9faee3145e62a6f', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '7b69729046a4c58f4cb457184e5ac4aaa179bff4', 'versionType': 'git'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '3882224b0e714f34de91e5f28307c5d3fccfe8f8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6e69317cd44a2f21f8f7a9d93eb3220e868adfa8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6cd6e1c978784eec9032e2fe94a53e62b674fe3e', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '5fb75c5272950b3ebe8bdee7abfdafd44f38313b', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': 'adce12bb0e0dc82d1d6f0821c9faee3145e62a6f', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '7b69729046a4c58f4cb457184e5ac4aaa179bff4', 'versionType': 'git'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '3882224b0e714f34de91e5f28307c5d3fccfe8f8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6e69317cd44a2f21f8f7a9d93eb3220e868adfa8', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '6cd6e1c978784eec9032e2fe94a53e62b674fe3e', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '5fb75c5272950b3ebe8bdee7abfdafd44f38313b', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': 'adce12bb0e0dc82d1d6f0821c9faee3145e62a6f', 'versionType': 'git'}, {'status': 'affected', 'version': '3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc', 'lessThan': '7b69729046a4c58f4cb457184e5ac4aaa179bff4', 'versionType': 'git'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kvm/pci.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path. Added Reference https://git.kernel.org/stable/c/3882224b0e714f34de91e5f28307c5d3fccfe8f8 Added Reference https://git.kernel.org/stable/c/5fb75c5272950b3ebe8bdee7abfdafd44f38313b Added Reference https://git.kernel.org/stable/c/6cd6e1c978784eec9032e2fe94a53e62b674fe3e Added Reference https://git.kernel.org/stable/c/6e69317cd44a2f21f8f7a9d93eb3220e868adfa8 Added Reference https://git.kernel.org/stable/c/7b69729046a4c58f4cb457184e5ac4aaa179bff4 Added Reference https://git.kernel.org/stable/c/adce12bb0e0dc82d1d6f0821c9faee3145e62a6f