SB20260928123 - Improper control of a resource through its lifetime in Linux kernel net bonding driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-98074)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to leave a physical device in promiscuous mode after bond teardown.

The vulnerability exists due to improper state management in __bond_release_one() when releasing all slaves during bond destruction. A local privileged user can destroy a bond containing active and backup slaves to leave a physical device in promiscuous mode after bond teardown.

The backup slave must be released before the active slave.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/19ba7ecfade159b3702c78a360fd7d971e2b7109
• https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81
• https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70
• https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e