Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4.140, < 5.4.169 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5Patch
- https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4aPatch
- https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29Patch
- https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9adPatch
- https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5Patch
- https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4aPatch
- https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29Patch
- https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9adPatch
FAQ
What is CVE-2021-47087?
CVE-2021-47087 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2021-47087?
CVE-2021-47087 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47087?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.