SB2025092902 - Red Hat Enterprise Linux 9 update for kernel
Published: September 29, 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-2025-38472)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nf_ct_resolve_clash_harder(), __nf_conntrack_confirm() and __nf_conntrack_insert_prepare() functions in net/netfilter/nf_conntrack_core.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2025-38527)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cifs_oplock_break() and cifs_put_tlink() functions in fs/smb/client/file.c. A local user can escalate privileges on the system.
3) Improper locking (CVE-ID: CVE-2025-38718)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the sctp_rcv() function in net/sctp/input.c. A local user can perform a denial of service (DoS) attack.
4) Memory leak (CVE-ID: CVE-2025-39682)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the decrypt_skb() and tls_sw_recvmsg() functions in net/tls/tls_sw.c. A local user can perform a denial of service (DoS) attack.
5) Use-after-free (CVE-ID: CVE-2025-39698)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the io_futex_wait() function in io_uring/futex.c. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.