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
References
| Link | Resource |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243 | Exploit Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujul2022.html | Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
03 Feb 2023, 14:31
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Oracle communications Cloud Native Core Binding Support Function
Oracle communications Cloud Native Core Policy Oracle communications Cloud Native Core Network Exposure Function Oracle |
|
| CPE | cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:* cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:* cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:* |
|
| References | (N/A) https://www.oracle.com/security-alerts/cpujul2022.html - Patch, Third Party Advisory |
25 Jul 2022, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
26 Aug 2021, 01:23
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MISC) https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243 - Exploit, Third Party Advisory | |
| CWE | CWE-908 | |
| CVSS |
v2 : v3 : |
v2 : 2.1
v3 : 3.3 |
| CPE | cpe:2.3:o:linux:linux_kernel:5.4.54:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.4.66:*:*:*:*:*:*:* |
18 Aug 2021, 15:26
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-08-18 15:15
Updated : 2023-12-10 13:55
NVD link : CVE-2021-21781
Mitre link : CVE-2021-21781
CVE.ORG link : CVE-2021-21781
JSON object : View
Products Affected
linux
- linux_kernel
oracle
- communications_cloud_native_core_binding_support_function
- communications_cloud_native_core_policy
- communications_cloud_native_core_network_exposure_function
CWE
CWE-908
Use of Uninitialized Resource