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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23 Patch
- git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2 Patch
- git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351 Patch
- git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c Patch
- git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae Patch
- git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432 Patch
- git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124 Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
- cert-portal.siemens.com/productcert/html/ssa-457936.html
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 12 November 2026
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