Vulnerabilities > CVE-2021-47087 - Release of Invalid Pointer or Reference vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5
- https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5
- https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a
- https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a
- https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29
- https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29
- https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad
- https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad