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NVD / CVE Program· CNA Linux

CVE-2026-72290: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 3882224b0e714f34de91e5f28307c5d3fccfe8f8, 5fb75c5272950b3ebe8bdee7abfdafd44f38313b, 6cd6e1c978784eec9032e2fe94a53e62b674fe3e.

Low priority for now. Upgrade to Linux Linux 3882224b0e714f34de91e5f28307c5d3fccfe8f8, 5fb75c5272950b3ebe8bdee7abfdafd44f38313b, 6cd6e1c978784eec9032e2fe94a53e62b674fe3e or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Nov 6, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.0affected
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before 3882224b0e714f34de91e5f28307c5d3fccfe8f8affected · git
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before 6e69317cd44a2f21f8f7a9d93eb3220e868adfa8affected · git
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before 6cd6e1c978784eec9032e2fe94a53e62b674fe3eaffected · git
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before 5fb75c5272950b3ebe8bdee7abfdafd44f38313baffected · git
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before adce12bb0e0dc82d1d6f0821c9faee3145e62a6faffected · git
    • 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and later · before 7b69729046a4c58f4cb457184e5ac4aaa179bff4affected · git
    • before 6.0not affected · semver
    • 6.1.178 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72288Aug 15, 2026 · KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling
    37Monitor
  • ← EarlierCVE-2026-72289Aug 15, 2026 · KVM: arm64: vgic: Check the interrupt is still ours before migrating it
    37Monitor
  • Later →CVE-2026-72296Aug 15, 2026 · net: ife: require ETH_HLEN to be pullable in ife_decode()
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3882224b0e714f34de91e5f28307c5d3fccfe8f8Vendor (CNA)
Linux Linux5fb75c5272950b3ebe8bdee7abfdafd44f38313bVendor (CNA)
Linux Linux6cd6e1c978784eec9032e2fe94a53e62b674fe3eVendor (CNA)
Linux Linux6e69317cd44a2f21f8f7a9d93eb3220e868adfa8Vendor (CNA)
Linux Linux7b69729046a4c58f4cb457184e5ac4aaa179bff4Vendor (CNA)
Linux Linuxadce12bb0e0dc82d1d6f0821c9faee3145e62a6fVendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records