Fedora 21 update for kernel

Published: 2015-10-28 | Updated: 2025-04-24

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2015-5156
CWE-ID	CWE-120
Exploitation vector	Local network
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) Buffer overflow

EUVDB-ID: #VU2552

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-5156

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists in the virtnet_probe function in drivers/net/virtio_net.c due to attempts to support a FRAGLIST feature without proper memory allocation. An adjacent attacker can submit a specially crafted sequence of fragmented packets, trigger buffer overflow and cause the service to crash.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 21

kernel: before 4.1.12-100.fc21

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2015-fe9a93653f

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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