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CVE-2021-21781

CVSS v3.1 3.3 (Low)
33% Progress
CVSS v2.0 2.1 (Low)
21% Progress
EPSS 0.04 % (17th)
0.04% Progress
Affected Products 4
Advisories 13
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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

Weaknesses
CWE-908
Use of Uninitialized Resource
CVE Status
PUBLISHED
CNA
Talos
Published Date
2021-08-18 15:15:07
(3 years ago)
Updated Date
2023-02-03 14:31:55
(19 months ago)

Affected Products

Linux

Oracle

Configuration #1

    CPE23 From Up To
  Linux Kernel 5.4.54 cpe:2.3:o:linux:linux_kernel:5.4.54
  Linux Kernel 5.4.66 cpe:2.3:o:linux:linux_kernel:5.4.66

Configuration #2

    CPE23 From Up To
  Oracle Communications Cloud Native Core Binding Support Function 22.1.3 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3
  Oracle Communications Cloud Native Core Network Exposure Function 22.1.1 cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1
  Oracle Communications Cloud Native Core Policy 22.2.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0