Linux Kernel up to 6.6.124/6.12.71/6.18.10/6.19.0 crypto virtcrypto_done_task privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.6.124/6.12.71/6.18.10/6.19.0. Affected by this vulnerability is the function virtcrypto_done_task of the component crypto. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2026-23229. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.124/6.12.71/6.18.10/6.19.0. This issue affects the function virtcrypto_done_task of the component crypto. The impact remains unknown. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-23229 since 01/13/2026. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2026).

The vulnerability scanner Nessus provides a plugin with the ID 299439 (Linux Distros Unpatched Vulnerability : CVE-2026-23229), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.125, 6.12.72, 6.18.11 or 6.19.1 eliminates this vulnerability. Applying the patch d6f0d586808689963e58fd739bed626ff5013b24/c0a0ded3bb7fd45f720faa48449a930153257d3a/e69a7b0a71b6561b3b6459f1fded8d589f2e8ac2/49c57c6c108931a914ed94e3c0ddb974008260a3 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (299439), EUVD (EUVD-2026-7672) and CERT Bund (WID-SEC-2026-0462). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299439
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23229

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.125/6.12.72/6.18.11/6.19.1
Patch: d6f0d586808689963e58fd739bed626ff5013b24/c0a0ded3bb7fd45f720faa48449a930153257d3a/e69a7b0a71b6561b3b6459f1fded8d589f2e8ac2/49c57c6c108931a914ed94e3c0ddb974008260a3

Timelineinfo

01/13/2026 CVE reserved
02/18/2026 +36 days Advisory disclosed
02/18/2026 +0 days VulDB entry created
05/24/2026 +95 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23229 (🔒)
GCVE (CVE): GCVE-0-2026-23229
GCVE (VulDB): GCVE-100-346511
EUVD: 🔒
CERT Bund: WID-SEC-2026-0462 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 02/18/2026 16:44
Updated: 05/24/2026 22:12
Changes: 02/18/2026 16:44 (58), 02/20/2026 02:01 (2), 02/20/2026 04:49 (7), 02/23/2026 06:53 (1), 03/19/2026 09:01 (10), 05/24/2026 22:12 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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