SB2024012905 - Fedora 39 update for kernel

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2023-6536)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the __nvmet_req_complete() function in the Linux kernel's NVMe driver. A remote attacker can send specially crafted NVMe-oF/TCP packets to the system and perform a denial of service (DoS) attack.

2) NULL pointer dereference (CVE-ID: CVE-2023-6535)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the nvmet_tcp_execute_request() function in the Linux kernel's NVMe driver. A remote attacker can send specially crafted NVMe-oF/TCP packets to the system and perform a denial of service (DoS) attack.

3) NULL pointer dereference (CVE-ID: CVE-2023-6356)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the nvmet_tcp_build_iovec() function in the Linux kernel's NVMe driver. A remote attacker can pass specially crafted TCP packets to the system and perform a denial of service (DoS) attack.

4) Input validation error (CVE-ID: CVE-2023-46838)

The vulnerability allows an unprivileged guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of network packets at the backend. An unprivileged guest can send zero-length packets to the OS kernel and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-2024-50ab089b1d