Fedora 33 update for kernel



| Updated: 2025-04-25
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-27675
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

kernel
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU83584

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27675

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in drivers/xen/events/events_base.c. A malicious guest can trigger a dom0 crash by sending events for a paravirtualized device while simultaneously performing its reconfiguration.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 33

kernel: before 5.8.17-300.fc33

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2020-474d747b60


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.



###SIDEBAR###