CVE-2026-23245 Affecting linux-6.1 package, versions <6.1.170-1~deb11u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-DEBIAN11-LINUX61-16399149
  • published4 May 2026
  • disclosed18 Mar 2026

Introduced: 18 Mar 2026

CVE-2026-23245  (opens in a new tab)

How to fix?

Upgrade Debian:11 linux-6.1 to version 6.1.170-1~deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.1 package and not the linux-6.1 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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

net/sched: act_gate: snapshot parameters with RCU on replace

The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list.

Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.

CVSS Base Scores

version 3.1