Fedora 40 update for linux-firmware



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-31315
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

linux-firmware
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU96619

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-31315

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper validation in a model specific register (MSR). A malicious application with ring0 access can modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 40

linux-firmware: before 20240909-1.fc40

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2024-f32e633786


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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