Riskcovery

CVE-2026-23245

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

State
Published
Severity
7.8 High
Published
Mar 18, 2026
Updated
Oct 15, 2026
Reserved
Jan 13, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a51c328df3106663879645680609eb49b3ff6444 to before fc98fd8d214693be91253d9a88cdf8e5e143d124Affected
  • a51c328df3106663879645680609eb49b3ff6444 to before 8b1251bbf0f10ac745ed74bad4d3b433caa1eeaeAffected
  • a51c328df3106663879645680609eb49b3ff6444 to before dfc314d7c767e350f78a46a8f8b134f80e8ad432Affected
  • a51c328df3106663879645680609eb49b3ff6444 to before 035d0d09d5ab3ed3e93d18cde2b562a6719eea23Affected
  • a51c328df3106663879645680609eb49b3ff6444 to before 04d75529dc0f9be78786162ebab7424af4644df2Affected
  • a51c328df3106663879645680609eb49b3ff6444 to before 58b162e318d0243ad2d7d92456c0873f2494c351Affected
  • a51c328df3106663879645680609eb49b3ff6444 to before 62413a9c3cb183afb9bb6e94dd68caf4e4145f4cAffected
LinuxLinux
  • 5.8Affected
  • before 5.8Not affected
  • 5.10.253 through 5.10.*Not affected
  • 6.1.167 through 6.1.*Not affected
  • 6.6.130 through 6.6.*Not affected
  • 6.12.78 through 6.12.*Not affected
  • 6.18.18 through 6.18.*Not affected
  • 6.19.8 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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