---
id: CVE-2026-92510
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/core: Fix potential use after free in ib_destroy_srq_user()

  When accessing a SRQ via the netlink path the only synchronization
  mechanism for the said SRQ is rdma_…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/core: Fix potential use after free in ib_destroy_srq_user()

  When accessing a SRQ via the netlink path the only synchronization
  mechanism for the said SRQ is rdma_…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    d3d0eabe6e39b024deb3e085e2d408d037e967c3
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    9c704383529044c02122f85a2a9a42cbf14a07a6
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    bedd7dee72588c838f5b67197ea8b387e7beb918
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    95c992c869df54a6a7061f5f3fb6400244f2af8f
  - >-
    Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 <
    88244ecc71cc0b3ed200f5ef7ddea6686adfd730
  - Linux 5.13
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:18:13.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92510'
references:
  - url: 'https://git.kernel.org/stable/c/88244ecc71cc0b3ed200f5ef7ddea6686adfd730'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/95c992c869df54a6a7061f5f3fb6400244f2af8f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9c704383529044c02122f85a2a9a42cbf14a07a6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bedd7dee72588c838f5b67197ea8b387e7beb918'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d3d0eabe6e39b024deb3e085e2d408d037e967c3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00171
epssPercentile: 0.05691
ingestedAt: '2026-09-17T16:21:47.780Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

RDMA/core: Fix potential use after free in ib_destroy_srq_user()

When accessing a SRQ via the netlink path the only synchronization
mechanism for the said SRQ is rdma_restrack_get().
Currently, rdma_restrack_del() is invoked at the end of
ib_destroy_srq_user(), which is too late, since by that point
vendor-specific resources associated with the SRQ might already be
freed. This can leave a short window where the SRQ remains accessible
through restrack, leading to a potential use-after-free.

Fix this by moving the rdma_restrack_begin_del() call to the start of
ib_destroy_srq_user(), ensuring that the SRQ is removed from restrack
before its internal resources are released. This guarantees that no new
users hold references to a SRQ that is in the process of destruction.

In addition, this change preserves the intended inverted order
between create and destroy routines: resources are added to
restrack at the end of successful creation, and hence shall be removed
from the restrack first thing during the destruction flow, which keeps
the lifecycle management consistent and predictable.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.