CVE-2026-43074
eventpoll: defer struct eventpoll free to RCU grace period
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 6, 2026 |
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Affected Versions
Linux / Linux
58c9b016e12855286370dfb704c08498edbc857a < a6566cd33f6f967a7651ebf2ce0dd31572e319cf 58c9b016e12855286370dfb704c08498edbc857a < 5b1173b165421561db29f30afc7e97d940a398a9 58c9b016e12855286370dfb704c08498edbc857a < 7e8083f5eeedab0f460063b9c2c14c9a4e71a427 58c9b016e12855286370dfb704c08498edbc857a < ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322 58c9b016e12855286370dfb704c08498edbc857a < 07712db80857d5d09ae08f3df85a708ecfc3b61f
Linux / Linux
6.4
References
git.kernel.org: https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf git.kernel.org: https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9 git.kernel.org: https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427 git.kernel.org: https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322 git.kernel.org: https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f