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.
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No vendor fix or workaround currently provided.
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Tracking
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Mon, 01 Jun 2026 17:00:00 +0000
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Wed, 20 May 2026 23:30:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-401 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:6.4:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* |
Fri, 08 May 2026 13:00:00 +0000
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cvssV3_1
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cvssV3_1
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Thu, 07 May 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-416 |
Thu, 07 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-825 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Wed, 06 May 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-416 |
Wed, 06 May 2026 09:30:00 +0000
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| 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. | |
| Title | eventpoll: defer struct eventpoll free to RCU grace period | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-06-01T16:14:10.614Z
Reserved: 2026-05-01T14:12:55.982Z
Link: CVE-2026-43074
No data.
Status : Modified
Published: 2026-05-06T10:16:20.343
Modified: 2026-06-17T10:48:53.150
Link: CVE-2026-43074
OpenCVE Enrichment
Updated: 2026-05-21T00:30:43Z