SB2026011256 - Red Hat Enterprise Linux 9 update for kernel

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Main Vulnerability Database SB2026011256

SB2026011256 - Red Hat Enterprise Linux 9 update for kernel

Published: January 12, 2026

Security Bulletin ID SB2026011256
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2025-23142)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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) Input validation error (CVE-ID: CVE-2025-39806)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the mt_report_fixup() function in drivers/hid/hid-multitouch.c. A local user can perform a denial of service (DoS) attack.


3) Use-after-free (CVE-ID: CVE-2025-39981)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the net/bluetooth/mgmt_util.h. A local user can escalate privileges on the system.


4) Use-after-free (CVE-ID: CVE-2025-39983)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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_num_comp_pkts_evt() function in net/bluetooth/hci_event.c. A local user can escalate privileges on the system.


5) Use-after-free (CVE-ID: CVE-2025-40176)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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.


6) Use-after-free (CVE-ID: CVE-2025-68287)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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.


Remediation

Install update from vendor's website.

References