SB20261023194 - Missing Release of Resource after Effective Lifetime in Linux kernel net bonding driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-98966)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to exhaust kernel resources and potentially cause a denial of service.

The vulnerability exists due to failure to release references to old BPF programs in the Linux kernel bonding driver's bond_xdp_set() function when replacing XDP programs. A local privileged user can repeatedly replace XDP programs on a bonding device to accumulate unreleased programs and potentially cause a denial of service through resource exhaustion.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/184b5ddf82d45d6f75cc83719a2e453392512bd2
• https://git.kernel.org/stable/c/bba6b1b086f9f4ddbfdaba7ea6279dc3abec70c7