Improper control of a resource through its lifetime in Linux kernel - CVE-2026-98074

Vulnerability details

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.

Affected software

How to mitigate CVE-2026-98074

External 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

Related Security Bulletins

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