---
id: CVE-2024-35902
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/rds: fix possible cp null dereference

  cp might be null, calling cp->cp_conn would produce null dereference

  [Simon Horman adds:]

  Analysis:

  * cp is a parameter of…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/rds: fix possible cp null dereference

  cp might be null, calling cp->cp_conn would produce null dereference

  [Simon Horman adds:]

  Analysis:

  * cp is a parameter of…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.19.310, < 4.19.312'
  - 'linux_kernel >= 5.4.272, < 5.7.274'
  - 'linux_kernel >= 5.10.213, < 5.10.215'
  - 'linux_kernel >= 5.15.152, < 5.15.154'
  - 'linux_kernel >= 6.1.82, < 6.1.85'
  - 'linux_kernel >= 6.6.22, < 6.6.26'
  - 'linux_kernel >= 6.7.10, < 6.8.5'
  - linux_kernel = 6.9
  - debian_linux = 10.0
patched:
  - linux_kernel 6.8.5
published: '2024-05-19'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:17:52.103'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-35902'
references:
  - url: 'https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00223
epssPercentile: 0.12832
ingestedAt: '2026-10-15T03:30:12.686Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-05-20T14:09:14.303997Z'
---

## Overview

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

net/rds: fix possible cp null dereference

cp might be null, calling cp->cp_conn would produce null dereference

[Simon Horman adds:]

Analysis:

* cp is a parameter of __rds_rdma_map and is not reassigned.

* The following call-sites pass a NULL cp argument to __rds_rdma_map()

  - rds_get_mr()
  - rds_get_mr_for_dest

* Prior to the code above, the following assumes that cp may be NULL
  (which is indicative, but could itself be unnecessary)

	trans_private = rs->rs_transport->get_mr(
		sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL,
		args->vec.addr, args->vec.bytes,
		need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED);

* The code modified by this patch is guarded by IS_ERR(trans_private),
  where trans_private is assigned as per the previous point in this analysis.

  The only implementation of get_mr that I could locate is rds_ib_get_mr()
  which can return an ERR_PTR if the conn (4th) argument is NULL.

* ret is set to PTR_ERR(trans_private).
  rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL.
  Thus ret may be -ENODEV in which case the code in question will execute.

Conclusion:
* cp may be NULL at the point where this patch adds a check;
  this patch does seem to address a possible bug

## Affected

- `linux_kernel >= 4.19.310, < 4.19.312`
- `linux_kernel >= 5.4.272, < 5.7.274`
- `linux_kernel >= 5.10.213, < 5.10.215`
- `linux_kernel >= 5.15.152, < 5.15.154`
- `linux_kernel >= 6.1.82, < 6.1.85`
- `linux_kernel >= 6.6.22, < 6.6.26`
- `linux_kernel >= 6.7.10, < 6.8.5`
- `linux_kernel = 6.9`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.8.5`