Fedora 39 update for qemu



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-6693
CWE-ID CWE-121
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

qemu
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU87161

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6693

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when flushing TX in the virtio_net_flush_tx() function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. A local user can trigger a stack based buffer overflow and execute arbitrary code on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

qemu: before 8.1.3-3.fc39

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2024-c601293124


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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