CVE-2021-21781
Low
Description
An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
SeverityLow
CVSS3.3
Exploit probability—
Product
Linux Kernel
PublishedAug 18, 2021
First seenAug 18, 2021
Weakness typeCWE-908CWE-908
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.4.54, 5.4.66 | — |
| 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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