SB2025031251 - Use-after-free in Linux kernel ethernet ibm driver
Published: March 12, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025031251
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-2025-21855)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ibmvnic_xmit() and netif_stop_subqueue() functions in drivers/net/ethernet/ibm/ibmvnic.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/093b0e5c90592773863f300b908b741622eef597
- https://git.kernel.org/stable/c/25dddd01dcc8ef3acff964dbb32eeb0d89f098e9
- https://git.kernel.org/stable/c/501ac6a7e21b82e05207c6b4449812d82820f306
- https://git.kernel.org/stable/c/abaff2717470e4b5b7c0c3a90e128b211a23da09
- https://git.kernel.org/stable/c/bdf5d13aa05ec314d4385b31ac974d6c7e0997c9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.130
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.80