CVE-2026-52926: batman-adv: clear current gateway during teardown
batman-adv: clear current gateway during teardown
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Compensating control
Clear the currently selected gateway (bat_priv->gw.curr_gw) before walking the gateway list so the selected gateway reference cannot remain stale across mesh teardown and later mesh recreation.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-52926?
The severity of CVE-2026-52926 is rated at 12, indicating a high risk vulnerability.
How does CVE-2026-52926 affect the Linux kernel batman-adv?
CVE-2026-52926 allows stale gateway state to persist across cleanups during mesh teardown, potentially affecting network performance and security.
How do I fix CVE-2026-52926?
To fix CVE-2026-52926, ensure you update to the latest version of the Linux kernel batman-adv where this vulnerability has been addressed.
When was CVE-2026-52926 published?
CVE-2026-52926 was published on June 24, 2026.
What is the impact of not addressing CVE-2026-52926?
Failing to address CVE-2026-52926 may lead to the use of outdated gateway information, destabilizing mesh network operations.