CVE-2021-47087

Published: Mar 4, 2024

Modified: May 23, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.

Vendor	Product	Versions
Linux	Linux	affected `3c712f14d8a9354a8807c15c64c8dd334499cc42 - < 806142c805cacd098e61bdc0f72c778a2389fe4a` affected `1340dc3fb75ea69221f4f5dcb0cbace55ad0331c - < ad338d825e3f7b96ee542bf313728af2d19fe9ad` affected `ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 - < 91e94e42f6fc49635f1a16d8ae3f79552bcfda29` affected `ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 - < 18549bf4b21c739a9def39f27dcac53e27286ab5` affected `255e17923b22cb7abd026e044416d61f6bd0eec0` +3 more versions
Linux	Linux	affected `5.14` unaffected `0 - < 5.14` unaffected `5.4.169 - <= 5.4.` unaffected `5.10.89 - <= 5.10.` unaffected `5.15.12 - <= 5.15.*` +1 more versions

References

https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a

https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad

https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29

https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5

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CVE-2021-47087

Description

Affected Products

References