CVE-2026-46181

HIGH EPSS 3.4%
Published May 28, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 28, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
3.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥4.9  –  <6.18.30
linuxlinux_kernel*≥6.19  –  <7.0.7
linuxlinux_kernel7.1any
linuxlinux_kernel7.1any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/1e2a44875b6afb4add1115f7f3351dcbeb6f273d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b7833f3bce35cb0d01c1503781523c099c675f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9341307ea16b9395c2e4c9c94d8499d91fe31d0
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1e2a44875b6afb4add1115f7f3351dcbeb6f273d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b7833f3bce35cb0d01c1503781523c099c675f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9341307ea16b9395c2e4c9c94d8499d91fe31d0
    Patch