---
id: CVE-2026-100075
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

  When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect
  descriptor, the unwind path destroys RDMA c…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

  When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect
  descriptor, the unwind path destroys RDMA c…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    af00051dbc9f467d4840ec709680660a3f8990fa
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    717ab4d0614e9446bf8e2de6229464499e4008d6
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    f1f2252da52cdda912da9993f39f58783b01b38f
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    be1478849e1abb1e12dc12e14cdbf800cc6fa99a
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    af073bd245180393bcb15d33d3990a6bdc32593a
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    bd02d644bd19a2795c018635d273d91e45d2bb95
  - >-
    Linux >= b99f8e4d7bcd3bfbb3cd965918523299370d0cb2 <
    b38f98e176050850f41bb6415f3a71400056623e
  - Linux 4.7
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T15:17:52.117'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100075'
references:
  - url: 'https://git.kernel.org/stable/c/717ab4d0614e9446bf8e2de6229464499e4008d6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/af00051dbc9f467d4840ec709680660a3f8990fa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/af073bd245180393bcb15d33d3990a6bdc32593a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b38f98e176050850f41bb6415f3a71400056623e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd02d644bd19a2795c018635d273d91e45d2bb95'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/be1478849e1abb1e12dc12e14cdbf800cc6fa99a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f1f2252da52cdda912da9993f39f58783b01b38f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T14:09:46.376Z'
---

## Overview

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

RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect
descriptor, the unwind path destroys RDMA contexts but leaves stale
n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later
sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending()
can then subtract the wrong number of send queue credits.

Reset the counters and clear rw_ctxs after freeing the heap
allocation before returning an error.

## Remediation

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