SB2025080406 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: August 4, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) 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.
2) 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.
3) 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.
4) Use-after-free (CVE-ID: CVE-2025-23150)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the do_split() function in fs/ext4/namei.c. A local user can escalate privileges on the system.
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-2022-49995)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the wb_inode_writeback_start() and wb_inode_writeback_end() functions in mm/page-writeback.c, within the wb_wakeup_delayed() and cgwb_remove_from_bdi_list() functions in mm/backing-dev.c, within the inode_io_list_move_locked(), wb_queue_work() and get_next_work_item() functions in fs/fs-writeback.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.