SB2025100217 - Ubuntu update for linux
Published: October 2, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-38618)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __vsock_bind_connectible() function in net/vmw_vsock/af_vsock.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2025-38500)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the xfrmi_changelink() function in net/xfrm/xfrm_interface_core.c. A local user can escalate privileges on the system.
3) Use-after-free (CVE-ID: CVE-2025-38477)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the qfq_change_class(), qfq_delete_class(), qfq_dump_class() and qfq_dump_class_stats() functions in net/sched/sch_qfq.c. A local user can escalate privileges on the system.
4) Use-after-free (CVE-ID: CVE-2025-37785)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __ext4_check_dir_entry() function in fs/ext4/dir.c. A local user can escalate privileges on the system.
5) Resource management error (CVE-ID: CVE-2025-37756)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the tls_setsockopt() and build_protos() functions in net/tls/tls_main.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.