SB20260626108 - Improper resource shutdown or release in Linux kernel core en driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-53229)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in mlx5e_xmit_xdp_buff() in the mlx5 XDP transmit path when handling XDP_TX transmission failures in the XSK branch. A local user can trigger an XDP_TX transmit failure to cause a denial of service.

The issue occurs when sq->xmit_xdp_frame() returns false, such as when the XDPSQ is full, leaving DMA mappings and xdp_frame objects unreleased.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0aabca726b43d833721034e97d99efcc8237b22a
• https://git.kernel.org/stable/c/2789b74ae1f4b68333c9d5eec2f3354d07b16e61
• https://git.kernel.org/stable/c/7b3eeba50fbc3b45f279037c29a87a90e8bac1e1
• https://git.kernel.org/stable/c/b69004f5a6ad32da84d8aa5b23b9c0caafe6252e