CVE-2026-23245net/sched: act_gate: snapshot parameters with RCU on replace
Updated under an hour ago ()
Does this affect you?
It affects Linux and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a51c328df3106663879645680609eb49b3ff6444 before fc98fd8d214693be91253d9a88cdf8e5e143d124; from a51c328df3106663879645680609eb49b3ff6444 before 8b1251bbf0f10ac745ed74bad4d3b433caa1eeae; from a51c328df3106663879645680609eb49b3ff6444 before dfc314d7c767e350f78a46a8f8b134f80e8ad432; from a51c328df3106663879645680609eb49b3ff6444 before 035d0d09d5ab3ed3e93d18cde2b562a6719eea23; from a51c328df3106663879645680609eb49b3ff6444 before 04d75529dc0f9be78786162ebab7424af4644df2; from a51c328df3106663879645680609eb49b3ff6444 before 58b162e318d0243ad2d7d92456c0873f2494c351; from a51c328df3106663879645680609eb49b3ff6444 before 62413a9c3cb183afb9bb6e94dd68caf4e4145f4c | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.8.1 before 5.10.253; from 5.11 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.18; from 6.19 before 6.19.8; 5.8; 7.0; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124patch
- https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeaepatch
- https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432patch
- https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23patch
- https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2patch
- https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351patch
- https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4cpatch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.