CVE-2026-23340: net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs

Overview

Severity
High (CVSS 7.1)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Exploit Status
Not Exploited
Patch Tuesday
2026-Mar
Released
2026-03-26
Last Updated
2026-04-25
EPSS Score
0.01% (percentile: 3.5%)

Affected Products (2)

Open Source Software

  • azl3 kernel 6.6.126.1-1 on Azure Linux 3.0
  • cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0

Revision History

  • 2026-03-26: Information published.
  • 2026-03-27: Information published.
  • 2026-04-25: Information published.