SB2025093002 - Red Hat Enterprise Linux 8 update for kernel
Published: September 30, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-22097)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vkms_init() and vkms_destroy() functions in drivers/gpu/drm/vkms/vkms_drv.c. A local user can escalate privileges on the system.
2) Memory leak (CVE-ID: CVE-2025-22058)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the udp_skb_has_head_state(), udp_rmem_release(), EXPORT_SYMBOL_GPL() and first_packet_length() functions in net/ipv4/udp.c. A local user can perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2025-38477)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.
Remediation
Install update from vendor's website.