CVE-2021-21781
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 processs 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
Risk Information
Base Score
3.3
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score
Exploitation Probability
0.015
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-abi-stablelists-4.18.0-372.9.1.el8.noarch.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-core-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-cross-headers-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-core-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-modules-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-modules-extra-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-doc-4.18.0-372.9.1.el8.noarch.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-modules-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-modules-extra-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-tools-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-tools-libs-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
| (RHSA-2022:1988) kernel security, bug fix, and enhancement update python3-perf-4.18.0-372.9.1.el8.x86_64.rpm | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234