Linux Kernel up to 6.19.6/7.0-rc2 ice ice_set_ringparam memory leak

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.19.6/7.0-rc2. The impacted element is the function ice_set_ringparam of the component ice. This manipulation causes memory leak. This vulnerability is tracked as CVE-2026-23389. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.19.6/7.0-rc2. Affected by this vulnerability is the function ice_set_ringparam of the component ice. 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: ice: Fix memory leak in ice_set_ringparam() In ice_set_ringparam, tx_rings and xdp_rings are allocated before rx_rings. If the allocation of rx_rings fails, the code jumps to the done label leaking both tx_rings and xdp_rings. Furthermore, if the setup of an individual Rx ring fails during the loop, the code jumps to the free_tx label which releases tx_rings but leaks xdp_rings. Fix this by introducing a free_xdp label and updating the error paths to ensure both xdp_rings and tx_rings are properly freed if rx_rings allocation or setup fails. Compile tested only. Issue found using a prototype static analysis tool and code review.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-23389 since 01/13/2026. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 320742 (EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-2400)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.19.7 or 7.0-rc3 eliminates this vulnerability. Applying the patch 44ba32a892b72de3faa04b8cfb1f2f1418fdd580/fe868b499d16f55bbeea89992edb98043c9de416 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 (320742) and CERT Bund (WID-SEC-2026-0861). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Google Container-Optimized OS
• Debian Linux
• Google Cloud Platform
• 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

• 6.19.0
• 6.19.1
• 6.19.2
• 6.19.3
• 6.19.4
• 6.19.5
• 6.19.6
• 7.0-rc1
• 7.0-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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