SB20240531154 - Use-after-free in Linux kernel char ipmi driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531154
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-47100)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cleanup_bmc_device() function in drivers/char/ipmi/ipmi_msghandler.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012
- https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18
- https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad
- https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e
- https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.223
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.89
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.169