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NVD / CVE Program· CNA Linux

CVE-2026-97592: s390/crypto: Fix missing scrub of temp buffers with AES ctr and gcm algorithm

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 11eca05d2062032e1f07d56be58ed0b99f4b1d63, 5.10.271, 5.15.222; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 11eca05d2062032e1f07d56be58ed0b99f4b1d63, 5.10.271, 5.15.222; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: s390/crypto: Fix missing scrub of temp buffers with AES ctr and gcm algorithm In function ctr_aes_crypt() there is a buffer used to process remaining bytes < AES_BLOCK_SIZE. This buffer was not scrubbed and thus could lead to expose of unwanted data. When the buffer is used explicitly scrub it at the end of the code block to avoid exposure of maybe sensitive data. In a similar way the function gcm_aes_crypt() hat an error path where the CPACF param block was not scrubbed. Instead of return early now these error paths go to end of function where explicit scrubbing is done. Similar with the buffers which are part of the gcm_sg_walk structs from the variables gw_in and gw_out.

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 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%

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  • A fix has been released

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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

    • e78f1a43e72daf77705ad5b9946de66fc708b874, 6.8affected
    • cd51e26a3b89706beec64f2d8296cfb1c34e0c79 and later · before 538f00558db9a66aeff20c36f43692c178a0e0ebaffected · git
    • a7f580cdb42ec3d53bbb7c4e4335a98423703285 and later · before 6ab772d675a885c3119bf0e79ea9e84756d7657aaffected · git
    • dbc9a791a70ea47be9f2acf251700fe254a2ab23 and later · before e17b85eb8cee90a1200fa5e7806db7ffa08a0608affected · git
    • d68ac38895e84446848b7647ab9458d54cacba3e and later · before 991c875310254a13b3a637bb279379c8c66e842daffected · git
    • d07f951903fa9922c375b8ab1ce81b18a0034e3b and later · before 11eca05d2062032e1f07d56be58ed0b99f4b1d63affected · git
    • d07f951903fa9922c375b8ab1ce81b18a0034e3b and later · before 8b90a47c4fba27bb4f2f086611742493629e9696affected · git
    • d07f951903fa9922c375b8ab1ce81b18a0034e3b and later · before a83488cecb35f924b7541306ed84893bb9906196affected · git
    • d07f951903fa9922c375b8ab1ce81b18a0034e3b and later · before 8b7c3b6914f19caf648d05726a86af6326d3c2c6affected · git
    • 5.10.210 and later · before 5.10.271affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.7-17.2.7-1

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-2026-97590Sep 25, 2026 · s390/crypto: Fix missing scrub of temp buffers with PAES algorithm
    0Monitor
  • ← EarlierCVE-2026-97591Sep 25, 2026 · s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto engine
    0Monitor
  • Later →CVE-2026-97593Sep 25, 2026 · iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX
    0Monitor

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 Linux11eca05d2062032e1f07d56be58ed0b99f4b1d63Vendor (CNA)
Linux Linux5.10.271Vendor (CNA)
Linux Linux5.15.222Vendor (CNA)
Linux Linux538f00558db9a66aeff20c36f43692c178a0e0ebVendor (CNA)
Linux Linux6.1.189Vendor (CNA)
Linux Linux6.6.158Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linux6ab772d675a885c3119bf0e79ea9e84756d7657aVendor (CNA)
Linux Linux8b7c3b6914f19caf648d05726a86af6326d3c2c6Vendor (CNA)
Linux Linux8b90a47c4fba27bb4f2f086611742493629e9696Vendor (CNA)
Linux Linux991c875310254a13b3a637bb279379c8c66e842dVendor (CNA)
Linux Linuxa83488cecb35f924b7541306ed84893bb9906196Vendor (CNA)
Linux Linuxe17b85eb8cee90a1200fa5e7806db7ffa08a0608Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records