Linux Kernel up to 6.0.18/6.1.4 virtio-crypto virtio_crypto_alg_skcipher_close_session memory leak

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.0.18/6.1.4 and classified as critical. Affected is the function virtio_crypto_alg_skcipher_close_session of the component virtio-crypto. This manipulation causes memory leak. This vulnerability appears as CVE-2022-50707. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.0.18/6.1.4 and classified as critical. Affected by this vulnerability is the function virtio_crypto_alg_skcipher_close_session of the component virtio-crypto. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session() 'vc_ctrl_req' is alloced in virtio_crypto_alg_skcipher_close_session(), and should be freed in the invalid ctrl_status->status error handling case. Otherwise there is a memory leak.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2022-50707 since 12/24/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 280043 (Linux Distros Unpatched Vulnerability : CVE-2022-50707), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.0.19 or 6.1.5 eliminates this vulnerability. Applying the patch 79026a2d0a1b080257773d22a493f9bcab8c65be/67fb59ff1384e338679c0eb7a43c83ce8868c9fa/0871df190fe6723464efe0f493d476411616f553/b1d65f717cd6305a396a8738e022c6f7c65cfbe8 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 (280043) and CERT Bund (WID-SEC-2025-2920). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source Linux Kernel
• RESF Rocky Linux

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.0.10
• 6.0.11
• 6.0.12
• 6.0.13
• 6.0.14
• 6.0.15
• 6.0.16
• 6.0.17
• 6.0.18
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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