SB2024082154 - Use-after-free in Linux kernel misc driver
Published: August 21, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024082154
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-2022-48873)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the fastrpc_free_map(), fastrpc_buf_free() and fastrpc_device_release() functions in drivers/misc/fastrpc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4b5c44e924a571d0ad07054de549624fbc04e4d7
- https://git.kernel.org/stable/c/193cd853145b63e670bd73740250983af1475330
- https://git.kernel.org/stable/c/1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8
- https://git.kernel.org/stable/c/35ddd482345c43d9eec1f3406c0f20a95ed4054b
- https://git.kernel.org/stable/c/5bb96c8f9268e2fdb0e5321cbc358ee5941efc15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.165
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.90
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.230
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2