CVE-2026-72383 (GCVE-0-2026-72383)
Vulnerability from cvelistv5
Published
2026-08-15 05:56
Modified
2026-10-21 12:44
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() while holding addr_wq_lock. However, timer_delete() does not guarantee that a currently running timer handler has completed. This allows a race with sctp_addr_wq_timeout_handler(), where the handler may still run after addr_waitq has been freed, acquire addr_wq_lock, and access freed memory, leading to a use-after-free. Fix this by calling timer_shutdown_sync() before taking addr_wq_lock. This guarantees that any in-flight timer handler has finished and prevents the timer from being re-armed during teardown, making subsequent cleanup safe.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4db67e808640e3934d82ce61ee8e2e89fd877ba8
Version: 4db67e808640e3934d82ce61ee8e2e89fd877ba8
Version: 4db67e808640e3934d82ce61ee8e2e89fd877ba8
Version: 4db67e808640e3934d82ce61ee8e2e89fd877ba8
Version: 4db67e808640e3934d82ce61ee8e2e89fd877ba8
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