KVM: s390: Fix memory leak in guest debug handling
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: 0.22% (FIRST EPSS).
- Fixed version: Linux Linux 121ea1de927c8b9bfdf53c31cad27b86d5de0293, 39e7cebb889839b5762c9ad22e2d715b5883b288, 44bf3792c10f4bb3de507391f1837e020d92eaa2.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 121ea1de927c8b9bfdf53c31cad27b86d5de0293, 39e7cebb889839b5762c9ad22e2d715b5883b288, 44bf3792c10f4bb3de507391f1837e020d92eaa2 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
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.
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- EPSS
- 0.2% · 11th percentile
- CWE
- —
Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
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.
Running WordPress? Scan your site free with WP Lens
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.
We use this product, ask for helpAffected 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
- 3.16affected
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 39e7cebb889839b5762c9ad22e2d715b5883b288affected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 58b1b729a9f90c80b508fc3e2174cbc0ee50859eaffected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 9071f75cbde3bf46119cb28e92cfbef830c4bf97affected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 5940418e4232a2ff1d30ba12e0d213dbf48f0a83affected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before fc2034c431adcbaabf5f8a01912358f07355349eaffected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 44bf3792c10f4bb3de507391f1837e020d92eaa2affected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 581be9f6085834188cef1ad2f07babf3b421e409affected · git
- 27291e2165b6de70c476b7b675308113edd69a60 and later · before 121ea1de927c8b9bfdf53c31cad27b86d5de0293affected · git
- before 3.16not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | all versions | — |
| Debian:12 | linux-6.12 | before 6.12.111-1~deb12u1 | 6.12.111-1~deb12u1 |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.6-1 | 7.2.6-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 121ea1de927c8b9bfdf53c31cad27b86d5de0293 | Vendor (CNA) |
| Linux Linux | 39e7cebb889839b5762c9ad22e2d715b5883b288 | Vendor (CNA) |
| Linux Linux | 44bf3792c10f4bb3de507391f1837e020d92eaa2 | Vendor (CNA) |
| Linux Linux | 581be9f6085834188cef1ad2f07babf3b421e409 | Vendor (CNA) |
| Linux Linux | 58b1b729a9f90c80b508fc3e2174cbc0ee50859e | Vendor (CNA) |
| Linux Linux | 5940418e4232a2ff1d30ba12e0d213dbf48f0a83 | Vendor (CNA) |
| Linux Linux | 9071f75cbde3bf46119cb28e92cfbef830c4bf97 | Vendor (CNA) |
| Linux Linux | fc2034c431adcbaabf5f8a01912358f07355349e | Vendor (CNA) |
| debian:linux | 6.12.111-1 · Debian:13 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.111-1~deb12u1 · Debian:12 | Package 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.
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 researchersFinders, 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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-1114 · Sep 17, 2026(Linux Kernel Güvenlik Bildirimi)
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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/39e7cebb889839b5762c9ad22e2d715b5883b288
- git.kernel.org/stable/c/44bf3792c10f4bb3de507391f1837e020d92eaa2
- git.kernel.org/stable/c/581be9f6085834188cef1ad2f07babf3b421e409
- git.kernel.org/stable/c/58b1b729a9f90c80b508fc3e2174cbc0ee50859e
- git.kernel.org/stable/c/5940418e4232a2ff1d30ba12e0d213dbf48f0a83
- git.kernel.org/stable/c/9071f75cbde3bf46119cb28e92cfbef830c4bf97
- git.kernel.org/stable/c/fc2034c431adcbaabf5f8a01912358f07355349e
Vendor advisories and official records. Exploit/PoC links are deliberately left out.