SB2025052150 - Red Hat Enterprise Linux 8 update for kernel
Published: May 21, 2025 Updated: July 3, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Memory leak (CVE-ID: CVE-2024-40906)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the mlx5_function_teardown() function in drivers/net/ethernet/mellanox/mlx5/core/main.c. A local user can perform a denial of service (DoS) attack.
2) Buffer overflow (CVE-ID: CVE-2024-44970)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the drivers/net/ethernet/mellanox/mlx5/core/en_rx.c. A local user can perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2025-21756)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 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:P/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the EXPORT_SYMBOL_GPL() and __vsock_release() functions in net/vmw_vsock/af_vsock.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.