Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 before 5098308ad72f83f3b1a48c247dddab1695114bae; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 before d49eff15261dd62e4fa3a316c26cb1f537a60464; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 before a8323fb2ab6cd6978f359daeed6688e0cadf32ba; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 before c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 before 976c19de0f22a857ba0112f39635f8fd7a257568 |
| Linux / Linux | affected 3.7; unaffected 0 before 3.7; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5098308ad72f83f3b1a48c247dddab1695114bae
- https://git.kernel.org/stable/c/d49eff15261dd62e4fa3a316c26cb1f537a60464
- https://git.kernel.org/stable/c/a8323fb2ab6cd6978f359daeed6688e0cadf32ba
- https://git.kernel.org/stable/c/c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1
- https://git.kernel.org/stable/c/976c19de0f22a857ba0112f39635f8fd7a257568
ADP enrichment
No English description supplied.
No references supplied.