Fedora 28 update for kernel, kernel-headers, kernel-tools



| Updated: 2025-04-24
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-16884
CWE-ID CWE-416
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Fedora
Operating systems & Components / Operating system

kernel-tools
Operating systems & Components / Operating system package or component

kernel-headers
Operating systems & Components / Operating system package or component

kernel
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free error

EUVDB-ID: #VU16616

Risk: Low

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-16884

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to bc_svc_process() use wrong back-channel id when NFS41+ shares mounted in different network namespaces at the same time. A remote attacker can use a malicious container to trigger use-after-free error and cause a system panic.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 28

kernel-tools: before 4.19.16-200.fc28

kernel-headers: before 4.19.16-200.fc28

kernel: before 4.19.16-200.fc28

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2019-20a89ca9af


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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