HIGH 7.8 Microsoft FEATURED PoC
CVE-2026-46242
a.k.a. BadEpoll
eventpoll: fix ep_remove struct eventpoll / struct file UAF
Microsoft Security Update 2026-May: eventpoll: fix ep_remove struct eventpoll / struct file UAF
Affected Products
- azl3 kernel 6.6.143.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.139.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.141.1-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46242
- https://nvd.nist.gov/vuln/detail/CVE-2026-46242
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-05-12 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. Affected: azl3 kernel 6.6.143.1-1 on Azure Linux 3.0, azl3 kernel 6.6.139.1-1 on Azure Linux 3.0, azl3 kernel 6.6.141.1-1 on Azure Linux 3.0.
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