---
id: CVE-2026-98967
title: 'cxgb4/ch_ktls: disable softirqs around tid_list erases'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  cxgb4/ch_ktls: disable softirqs around tid_list erases

  chcr_ktls_cpl_act_open_rpl() inserts into tid_list from the receive path
  using xa_insert_bh().  The array is sha…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 <
    8739f06e3f82cd715f7dd10ab24029ed881efc90
  - >-
    Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 <
    bcf97573d44e277b1744d7f1226f665aa0ccc599
  - >-
    Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 <
    7110c7f70c59eb7924e79853bcc00e2a026662e6
  - >-
    Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 <
    bea736a2b8c6da5b1078badf1206541b5404250f
  - >-
    Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 <
    4c9dc0faca98084922caeb689579d338cf3e1c29
  - Linux b96adbf6601d76ee0bdd9bfa5bcdd0cdd5333d78
  - Linux 70c4ead897211b184f36cbeda213f2a3e8153218
  - Linux >= 5.10.42 < 5.11
  - Linux >= 5.12.9 < 5.13
  - Linux 5.13
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T12:19:37.625Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98967'
references:
  - url: 'https://git.kernel.org/stable/c/8739f06e3f82cd715f7dd10ab24029ed881efc90'
  - url: 'https://git.kernel.org/stable/c/bcf97573d44e277b1744d7f1226f665aa0ccc599'
  - url: 'https://git.kernel.org/stable/c/7110c7f70c59eb7924e79853bcc00e2a026662e6'
  - url: 'https://git.kernel.org/stable/c/bea736a2b8c6da5b1078badf1206541b5404250f'
  - url: 'https://git.kernel.org/stable/c/4c9dc0faca98084922caeb689579d338cf3e1c29'
tags:
  - cve.org
ingestedAt: '2026-10-23T13:24:55.552Z'
---

## Overview

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

cxgb4/ch_ktls: disable softirqs around tid_list erases

chcr_ktls_cpl_act_open_rpl() inserts into tid_list from the receive path
using xa_insert_bh().  The array is shared by the adapter's connections
and initialized with XA_FLAGS_LOCK_BH.  However, chcr_ktls_dev_del() and
the chcr_ktls_dev_add() error path use xa_erase(), which takes the XArray
lock without disabling softirqs.

When cleanup runs with softirqs enabled, a receive softirq for another
connection on the same CPU can interrupt the erase and spin on the lock
held by the interrupted task.  Use xa_erase_bh() at both sites to match
the insertion path.

## Affected

- `Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 < 8739f06e3f82cd715f7dd10ab24029ed881efc90`
- `Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 < bcf97573d44e277b1744d7f1226f665aa0ccc599`
- `Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 < 7110c7f70c59eb7924e79853bcc00e2a026662e6`
- `Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 < bea736a2b8c6da5b1078badf1206541b5404250f`
- `Linux >= 65e302a9bd57b62872040d57eea1201562a7cbb2 < 4c9dc0faca98084922caeb689579d338cf3e1c29`
- `Linux b96adbf6601d76ee0bdd9bfa5bcdd0cdd5333d78`
- `Linux 70c4ead897211b184f36cbeda213f2a3e8153218`
- `Linux >= 5.10.42 < 5.11`
- `Linux >= 5.12.9 < 5.13`
- `Linux 5.13`

## Remediation

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