SB2024062073 - Improper locking in Linux kernel ethernet broadcom driver
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062073
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2021-47587)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the tdma_port_write_desc_addr() and bcm_sysport_open() functions in drivers/net/ethernet/broadcom/bcmsysport.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/8ed2f5d08d6e59f8c78b2869bfb95d0be32c094c
- https://git.kernel.org/stable/c/de57f62f76450b934de8203711bdc4f7953c3421
- https://git.kernel.org/stable/c/f3fde37d3f0d429f0fcce214cb52588a9e21260e
- https://git.kernel.org/stable/c/595a684fa6f23b21958379a18cfa83862c73c2e1
- https://git.kernel.org/stable/c/c675256a7f131f5ba3f331efb715e8f31ea0e392
- https://git.kernel.org/stable/c/6e1011cd183faae8daff275c72444edcdfe0d473
- https://git.kernel.org/stable/c/eb4687c7442942e115420a30185f8d83faf37696
- https://git.kernel.org/stable/c/8b8e6e782456f1ce02a7ae914bbd5b1053f0b034
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.259
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.222
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.296
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.294
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.168