SB2026011321 - Red Hat Enterprise Linux 9 update for kernel
Published: January 13, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-23142)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the sctp_transport_free() function in net/sctp/transport.c, within the sctp_writeable(), sctp_sendmsg_to_asoc(), sctp_sock_rfree() and sctp_wait_for_sndbuf() functions in net/sctp/socket.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2025-38724)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nfsd4_setclientid_confirm() function in fs/nfsd/nfs4state.c. A local user can escalate privileges on the system.
3) Race condition (CVE-ID: CVE-2025-39825)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the cifs_rename2() function in fs/smb/client/inode.c. A local user can escalate privileges on the system.
4) Input validation error (CVE-ID: CVE-2025-39898)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the e1000_set_eeprom() function in drivers/net/ethernet/intel/e1000e/ethtool.c. A local user can perform a denial of service (DoS) attack.
5) Use-after-free (CVE-ID: CVE-2025-39982)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the hci_conn_complete_evt() and le_conn_complete_evt() functions in net/bluetooth/hci_event.c. A local user can escalate privileges on the system.
6) Use-after-free (CVE-ID: CVE-2025-40141)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the iso_sock_kill() function in net/bluetooth/iso.c. A local user can escalate privileges on the system.
7) Use-after-free (CVE-ID: CVE-2025-40176)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tls_decrypt_sg() function in net/tls/tls_sw.c. A local user can escalate privileges on the system.
8) Use-after-free (CVE-ID: CVE-2025-68287)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the dwc3_gadget_giveback() function in drivers/usb/dwc3/gadget.c. A local user can escalate privileges on the system.
9) Use-after-free (CVE-ID: CVE-2025-68285)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the monmap_show() and osdmap_show() functions in net/ceph/debugfs.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.