7.8
High
CVE-2026-43074 In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU…
Description
In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree() to an RCU callback to prevent UAF.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 7.0 | earliest → < 7.0 | 7.0 |
| Linux 6.19 | earliest → < 6.19.14 | 6.19.14 |
| Linux 6.18 | earliest → < 6.18.24 | 6.18.24 |
| Linux 6.12 | earliest → < 6.12.83 | 6.12.83 |
| Linux 6.6 | earliest → < 6.6.136 | 6.6.136 |
| Linux | 6.4 | No fix stated |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published |
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