---
id: CVE-2026-98498
title: 'net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()

  When the reverse entry is found but its counter is already being
  released, refcount_inc_not_z…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    598daa5f95883f881a54967da40ce0fdfc1fdaa8
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    79a3257280a335bbebbcd10d3895e8468bdcd6ae
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    c45c997d0c27359b502587897f775c5a277f0bd4
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    288721013605b4e0304e10f6a087b77f71cfad11
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    60eab87d0a798070bf5a856b1d9e5785ce92da53
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    99d8dc51663747078c031acac32edc6d90c8f1f7
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    1f13989a0704bd98cab09f9bee63e2c8a98ad4dd
  - >-
    Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd <
    0bf6bb567f0edaa771e7dd208ef98da50e6a4485
  - Linux 5.10
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:16:30.116Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98498'
references:
  - url: 'https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8'
  - url: 'https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae'
  - url: 'https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4'
  - url: 'https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11'
  - url: 'https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53'
  - url: 'https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7'
  - url: 'https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd'
  - url: 'https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485'
tags:
  - cve.org
ingestedAt: '2026-10-18T15:45:12.289Z'
---

## Overview

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

net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()

When the reverse entry is found but its counter is already being
released, refcount_inc_not_zero() fails and the reference taken by
mlx5_tc_ct_entry_get() is never dropped before falling through to
create_counter.  Drop it so the reverse entry is not kept alive forever
by a shared counter lookup that did not use it.

## Affected

- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 598daa5f95883f881a54967da40ce0fdfc1fdaa8`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 79a3257280a335bbebbcd10d3895e8468bdcd6ae`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < c45c997d0c27359b502587897f775c5a277f0bd4`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 288721013605b4e0304e10f6a087b77f71cfad11`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 60eab87d0a798070bf5a856b1d9e5785ce92da53`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 99d8dc51663747078c031acac32edc6d90c8f1f7`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 1f13989a0704bd98cab09f9bee63e2c8a98ad4dd`
- `Linux >= 1edae2335adfa7006853e8b427f0c7c3f46b51dd < 0bf6bb567f0edaa771e7dd208ef98da50e6a4485`
- `Linux 5.10`

## Remediation

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