CVE-2026-46181
Published: May 28, 2026
Modified: May 30, 2026
CVSS v3.1
7.8
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() Sashiko points out the radix_tree itself is RCU safe, but nothing ever frees the mlx4_srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash if an event is delivered before the srq object is finished initializing. Use the spinlock since it isn't easy to make RCU work, use refcount_inc_not_zero() to protect against partially initialized objects, and order the refcount_set() to be after the srq is fully initialized.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 30353bfc43a1602c020f31d95cf27182ffd23824 - < 1e2a44875b6afb4add1115f7f3351dcbeb6f273daffected 30353bfc43a1602c020f31d95cf27182ffd23824 - < 8b7833f3bce35cb0d01c1503781523c099c675f0affected 30353bfc43a1602c020f31d95cf27182ffd23824 - < c9341307ea16b9395c2e4c9c94d8499d91fe31d0 |
Linux | Linux | affected 4.9unaffected 0 - < 4.9unaffected 6.18.30 - <= 6.18.*unaffected 7.0.7 - <= 7.0.*unaffected 7.1-rc3 - <= * |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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