Vulnerability Details CVE-2021-21781
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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.6%
CVSS Severity
CVSS v3 Score 4.0
CVSS v2 Score 2.1
References
Products affected by CVE-2021-21781
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cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3
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cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1
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cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0
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cpe:2.3:o:linux:linux_kernel:5.4.54
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cpe:2.3:o:linux:linux_kernel:5.4.66