SB2024053159 - Use-after-free in Linux kernel infiniband core driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053159
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-2021-47391)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cma_cancel_operation() and rdma_resolve_addr() functions in drivers/infiniband/core/cma.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/9a085fa9b7d644a234465091e038c1911e1a4f2a
- https://git.kernel.org/stable/c/03d884671572af8bcfbc9e63944c1021efce7589
- https://git.kernel.org/stable/c/305d568b72f17f674155a2a8275f865f207b3808
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15