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An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups and thus a process inside a mount namespace can escape to unintended filesystem locations aka CID-ff002b30181d.

🗓️ 03 Dec 2020 08:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 2 Views

Kernel flaw in fs/io_uring.c before 5.6 mishandles root dir in path lookups, enabling escape.

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03 Dec 2020 08:00Current
8.3High risk
Vulners AI Score8.3
CVSS 22.1
CVSS 3.16.5
EPSS0.00047
2