CVE-2026-23245
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < fc98fd8d214693be91253d9a88cdf8e5e143d124 | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < 8b1251bbf0f10ac745ed74bad4d3b433caa1eeae | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < dfc314d7c767e350f78a46a8f8b134f80e8ad432 | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < 035d0d09d5ab3ed3e93d18cde2b562a6719eea23 | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < 04d75529dc0f9be78786162ebab7424af4644df2 | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < 58b162e318d0243ad2d7d92456c0873f2494c351 | affected |
| Linux | Linux | a51c328df3106663879645680609eb49b3ff6444 < 62413a9c3cb183afb9bb6e94dd68caf4e4145f4c | affected |
| Linux | Linux | 5.8 | affected |
| Linux | Linux | 0 < 5.8 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.78 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.18 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.8 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124
- https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae
- https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432
- https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23
- https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2
- https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351
- https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.