MGASA-2021-0348

Advisory lineage Upstream: 3 Downstream: 0
Published: 12 Jul 2021, 20:26
Last modified:16 Apr 2026, 04:44

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Jul 2021, 20:26
Published
Vulnerability first disclosed
16 Apr 2026, 04:44
Last Modified
Vulnerability information updated

Description

Updated kernel-linus packages fix security vulnerabilities This kernel-linus update is based on upstream 5.10.48 and fixes at least the following security issues: The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541). An issue was discovered in Linux: KVM through Improper handling of VM_IO| VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation (CVE-2021-22543). kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument (CVE-2021-35039). For other upstream fixes, see the referenced changelogs.

Affected Systems

  • mageia•kernel-linus

    < 5.10.48-1.mga8

References (4)