7.8 High

CVE-2026-23245 In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on…

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 and versions

Product	Affected versions	Fixed in
Linux 7.0	earliest → < 7.0	7.0
Linux 6.19	earliest → < 6.19.8	6.19.8
Linux 6.18	earliest → < 6.18.18	6.18.18
Linux 6.12	earliest → < 6.12.78	6.12.78
Linux 6.6	earliest → < 6.6.130	6.6.130
Linux 6.1	earliest → < 6.1.167	6.1.167
Linux 5.10	earliest → < 5.10.253	5.10.253
Linux	5.8	No fix stated
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated

Show the 3 other branches

Product	Affected versions	Fixed in
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Versions not published