SB2024062489 - Input validation error in Linux kernel infiniband core driver

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2021-47265)

CWE-ID: CWE-20 - Improper input validation

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 improper input validation within the mlx5_ib_create_flow() function in drivers/infiniband/hw/mlx5/fs.c, within the mlx4_ib_create_flow() function in drivers/infiniband/hw/mlx4/main.c, within the ib_uverbs_ex_create_flow() function in drivers/infiniband/core/uverbs_cmd.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/8dc1b0e0ca204596c50bcd159ee069ae0f998176
• https://git.kernel.org/stable/c/2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13