SB2025073049 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: July 30, 2025 Updated: August 29, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-21759)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mld_send_cr() and igmp6_send() functions in net/ipv6/mcast.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2024-57980)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the uvc_status_init() function in drivers/media/usb/uvc/uvc_status.c. A local user can escalate privileges on the system.
3) Buffer overflow (CVE-ID: CVE-2025-21905)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the iwl_parse_tlv_firmware() function in drivers/net/wireless/intel/iwlwifi/iwl-drv.c. A local user can perform a denial of service (DoS) attack.
4) Improper locking (CVE-ID: CVE-2025-22113)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ext4_handle_error(), ext4_put_super() and ext4_load_and_init_journal() functions in fs/ext4/super.c. A local user can perform a denial of service (DoS) attack.
5) Improper locking (CVE-ID: CVE-2025-37958)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the __split_huge_pmd_locked() and split_huge_pmd_locked() functions in mm/huge_memory.c. A local user can perform a denial of service (DoS) attack.
6) Use-after-free (CVE-ID: CVE-2025-38001)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cl_in_el_or_vttree(), hfsc_change_class() and hfsc_enqueue() functions in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.
7) Use-after-free (CVE-ID: CVE-2025-38052)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tipc_aead_encrypt() and tipc_aead_encrypt_done() functions in net/tipc/crypto.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.