CVE-2025-71084
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will prevent the work from running which also prevents destroying the ah_attr. This leaks a refcount and triggers a WARN: GID entry ref leak for dev syz1 index 2 ref=573 WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886 Destroy the ah_attr after canceling the work, it is safe to call this twice.
How to fix
- linux linux_kernel5.10.248, 5.12, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10.20 ≤ v < 5.10.248, 5.11.3 ≤ v < 5.12, 5.12.1 ≤ v < 5.15.198, 5.16 ≤ v < 6.1.160, 6.2 ≤ v < 6.6.120, 6.7 ≤ v < 6.12.64, 6.13 ≤ v < 6.18.4, 5.12, 6.19 | 5.10.248, 5.12, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4 |
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