SB2025090406 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: September 4, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2025-38085)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the huge_pmd_unshare() function in mm/hugetlb.c. A local user can perform a denial of service (DoS) attack.
2) Out-of-bounds read (CVE-ID: CVE-2025-38159)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the rtw_coex_tdma_timer_base() function in drivers/net/wireless/realtek/rtw88/coex.c. A local user can perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2025-38250)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the DEFINE_IDA(), hci_dev_get(), hci_dev_do_reset(), hci_dev_reset(), hci_alloc_dev_priv() and hci_unregister_dev() functions in net/bluetooth/hci_core.c. A local user can escalate privileges on the system.
4) Use-after-free (CVE-ID: CVE-2025-38464)
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_topsrv_stop() function in net/tipc/topsrv.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.