CVE-2021-4002
Medium
Description
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
SeverityMedium
CVSS4.4
Exploit probability—
Product
Linux Kernel
PublishedMar 3, 2022
First seenMar 3, 2022
Weakness typeCWE-459CWE-459
How to fix
Update
- linux linux_kernel5.16 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.16, 5.16 | 5.16 |
| debian debian_linux | 9.0, 10.0 | — |
| fedoraproject fedora | 35 | — |
| oracle communications_cloud_native_core_binding_support_function | 22.1.3 | — |
| oracle communications_cloud_native_core_network_exposure_function | 22.1.1 | — |
| oracle communications_cloud_native_core_policy | 22.2.0 | — |
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