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An issue was discovered in the Linux kernel before 5.7.3 related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation when used for a copy-on-write page does not properly consider the semantics of read operations and therefore can grant unintended write access aka CID-17839856fd58.

🗓️ 03 Dec 2020 08:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 1 Views

A flaw in the Linux kernel before 5.7.3 in get_user_pages for copy-on-write may grant unintended write access by ignoring read semantics.

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03 Dec 2020 08:00Current
8.3High risk
Vulners AI Score8.3
CVSS 23.3
CVSS 3.13.6
EPSS0.00019
1