7.8

CVE-2021-47087

tee: optee: Fix incorrect page free bug

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.4.140 < 5.4.169
Linux ≫ Linux Kernel Version >= 5.10.58 < 5.10.89
Linux ≫ Linux Kernel Version >= 5.14 < 5.15.12
Linux ≫ Linux Kernel Version5.16 Updaterc1
Linux ≫ Linux Kernel Version5.16 Updaterc2
Linux ≫ Linux Kernel Version5.16 Updaterc3
Linux ≫ Linux Kernel Version5.16 Updaterc4
Linux ≫ Linux Kernel Version5.16 Updaterc5
Linux ≫ Linux Kernel Version5.16 Updaterc6
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.14
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-763 Release of Invalid Pointer or Reference

The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5
Patch
https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a
Patch
https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29
Patch
https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad
Patch