---
id: CVE-2026-43469
title: 'xprtrdma: Decrement re_receiving on the early exit paths'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xprtrdma: Decrement re_receiving on the early exit paths

  In the event that rpcrdma_post_recvs() fails to create a work request
  (due to memory allocation failure, say) …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    7ea69259a60a364f56cf4aa9e2eafb588d1c762b
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    8cb6b5d8296b1f99a8d36849901ebabfe3f749db
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    74c39a47856bddcde7874f2196a00143b5cd0af9
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    49f53ee4e25297d886f14e31f355ad1c2735ddfb
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    8127b5fec04757c2a41ed65bca0b3266968efd3b
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf
  - >-
    Linux >= 15788d1d1077ebe029c48842c738876516d85076 <
    7b6275c80a0c81c5f8943272292dfe67730ce849
  - Linux 5.13
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T15:17:41.397506Z'
published: '2026-05-08'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:20:42.799Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43469'
references:
  - url: 'https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b'
  - url: 'https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db'
  - url: 'https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9'
  - url: 'https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb'
  - url: 'https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b'
  - url: 'https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf'
  - url: 'https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849'
tags:
  - cve.org
epss: 0.007
epssPercentile: 0.52217
ingestedAt: '2026-10-16T17:24:46.697Z'
---

## Overview

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

xprtrdma: Decrement re_receiving on the early exit paths

In the event that rpcrdma_post_recvs() fails to create a work request
(due to memory allocation failure, say) or otherwise exits early, we
should decrement ep->re_receiving before returning. Otherwise we will
hang in rpcrdma_xprt_drain() as re_receiving will never reach zero and
the completion will never be triggered.

On a system with high memory pressure, this can appear as the following
hung task:

    INFO: task kworker/u385:17:8393 blocked for more than 122 seconds.
          Tainted: G S          E       6.19.0 #3
    "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
    task:kworker/u385:17 state:D stack:0     pid:8393  tgid:8393  ppid:2      task_flags:0x4248060 flags:0x00080000
    Workqueue: xprtiod xprt_autoclose [sunrpc]
    Call Trace:
     <TASK>
     __schedule+0x48b/0x18b0
     ? ib_post_send_mad+0x247/0xae0 [ib_core]
     schedule+0x27/0xf0
     schedule_timeout+0x104/0x110
     __wait_for_common+0x98/0x180
     ? __pfx_schedule_timeout+0x10/0x10
     wait_for_completion+0x24/0x40
     rpcrdma_xprt_disconnect+0x444/0x460 [rpcrdma]
     xprt_rdma_close+0x12/0x40 [rpcrdma]
     xprt_autoclose+0x5f/0x120 [sunrpc]
     process_one_work+0x191/0x3e0
     worker_thread+0x2e3/0x420
     ? __pfx_worker_thread+0x10/0x10
     kthread+0x10d/0x230
     ? __pfx_kthread+0x10/0x10
     ret_from_fork+0x273/0x2b0
     ? __pfx_kthread+0x10/0x10
     ret_from_fork_asm+0x1a/0x30

## Affected

- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7ea69259a60a364f56cf4aa9e2eafb588d1c762b`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8cb6b5d8296b1f99a8d36849901ebabfe3f749db`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 74c39a47856bddcde7874f2196a00143b5cd0af9`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 49f53ee4e25297d886f14e31f355ad1c2735ddfb`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8127b5fec04757c2a41ed65bca0b3266968efd3b`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf`
- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7b6275c80a0c81c5f8943272292dfe67730ce849`
- `Linux 5.13`

## Remediation

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