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NVD / CVE Program· CNA Linux

CVE-2026-23229: crypto: virtio - Add spinlock protection with virtqueue notification

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.14% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 4.20, 49c57c6c108931a914ed94e3c0ddb974008260a3, 5.10.251; azl3 kernel 6.6.121.1-1 on Azure Linux 3.0 6.6.121.1-2; cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0 5.15.202.1-1.

Low priority for now. Upgrade to Linux Linux 4.20, 49c57c6c108931a914ed94e3c0ddb974008260a3, 5.10.251; azl3 kernel 6.6.121.1-1 on Azure Linux 3.0 6.6.121.1-2; cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0 5.15.202.1-1 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: crypto: virtio - Add spinlock protection with virtqueue notification When VM boots with one virtio-crypto PCI device and builtin backend, run openssl benchmark command with multiple processes, such as openssl speed -evp aes-128-cbc -engine afalg -seconds 10 -multi 32 openssl processes will hangup and there is error reported like this: virtio_crypto virtio0: dataq.0:id 3 is not a head! It seems that the data virtqueue need protection when it is handled for virtio done notification. If the spinlock protection is added in virtcrypto_done_task(), openssl benchmark with multiple processes works well.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 18, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 3th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.19.306 and later · before 4.20
  • linux linux kernel5.4.268 and later · before 5.5
  • linux linux kernel5.10.209 and later · before 5.10.251
  • linux linux kernel5.15.148 and later · before 5.15.201
  • linux linux kernel6.1.75 and later · before 6.1.164
  • linux linux kernel6.6.14 and later · before 6.6.125
  • linux linux kernel6.7.2 and later · before 6.12.72
  • linux linux kernel6.13 and later · before 6.18.11
  • linux linux kernel6.19 and later · before 6.19.1

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

    • 96be18c8fff9d57e29621386e2fa17268383ea27, 830a4f073f7edd2cc4f30ba95bdc3495d97c2550, 8862c0d2e47ba1733d9687fe0ff4e02d6e391255, 6.8affected
    • 0eb69890e86775d178452880ea0d24384c5ccedf and later · before 552475d0b6cece73a52c0fa5faa0ce45e99df74baffected · git
    • 75cba72ddb788a5b9c7ed2139fbb84383df029eb and later · before 8ee8ccfd60bf17cbdab91069d324b5302f4f3a30affected · git
    • ae4747dab2eab95a68bb2f6c7e904bff0424e1b1 and later · before c9e594194795c86ca753ad6ed64c2762e9309d0daffected · git
    • c4c54fce9ec54a59a4ca035af13c2823c76684cc and later · before d6f0d586808689963e58fd739bed626ff5013b24affected · git
    • fed93fb62e05c38152b0fc1dc9609639e63eed76 and later · before c0a0ded3bb7fd45f720faa48449a930153257d3aaffected · git
    • fed93fb62e05c38152b0fc1dc9609639e63eed76 and later · before e69a7b0a71b6561b3b6459f1fded8d589f2e8ac2affected · git
    • fed93fb62e05c38152b0fc1dc9609639e63eed76 and later · before 49c57c6c108931a914ed94e3c0ddb974008260a3affected · git
    • fed93fb62e05c38152b0fc1dc9609639e63eed76 and later · before b505047ffc8057555900d2d3a005d033e6967382affected · git
    • 5.10.209 and later · before 5.10.251affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:11linuxbefore 5.10.251-15.10.251-1
Debian:12linuxbefore 6.1.164-16.1.164-1
Debian:13linuxbefore 6.12.73-16.12.73-1
Debian:14linuxbefore 6.18.12-16.18.12-1
openSUSE:Tumbleweedkernel-sourcebefore 6.19.8-1.16.19.8-1.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-23227Feb 18, 2026 · drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free
    31Monitor
  • ← EarlierCVE-2026-23228Feb 18, 2026 · smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
    22Monitor
  • Later →CVE-2025-71225Feb 18, 2026 · md: suspend array while updating raid_disks via sysfs
    21Monitor

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 Linux4.20Vendor (CNA)
Linux Linux49c57c6c108931a914ed94e3c0ddb974008260a3Vendor (CNA)
Linux Linux5.10.251Vendor (CNA)
Linux Linux5.15.201Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux552475d0b6cece73a52c0fa5faa0ce45e99df74bVendor (CNA)
Linux Linux6.1.164Vendor (CNA)
Linux Linux6.6.125Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linux8ee8ccfd60bf17cbdab91069d324b5302f4f3a30Vendor (CNA)
Linux Linuxb505047ffc8057555900d2d3a005d033e6967382Vendor (CNA)
Linux Linuxc0a0ded3bb7fd45f720faa48449a930153257d3aVendor (CNA)
Linux Linuxc9e594194795c86ca753ad6ed64c2762e9309d0dVendor (CNA)
Linux Linuxd6f0d586808689963e58fd739bed626ff5013b24Vendor (CNA)
Linux Linuxe69a7b0a71b6561b3b6459f1fded8d589f2e8ac2Vendor (CNA)
azl3 kernel 6.6.121.1-1 on Azure Linux 3.06.6.121.1-2 · Release NotesMicrosoft (MSRC)
cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.05.15.202.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.164-1 · Debian:12Package registry (OSV)
opensuse:kernel-source6.19.8-1.1 · openSUSE:TumbleweedPackage 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.

No history yet (it accumulates with the daily EPSS job).

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

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

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 (8 more)

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

All records