SB2026022502 - Red Hat Enterprise Linux 9 update for kernel

Description

This security bulletin contains information about 12 vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2025-37882)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 NULL pointer dereference within the handle_tx_event() function in drivers/usb/host/xhci-ring.c. A local user can perform a denial of service (DoS) attack.

2) Improper locking (CVE-ID: CVE-2025-37861)

CWE-ID: CWE-667 - Improper Locking

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 locking within the mpi3mr_process_factsdata(), mpi3mr_process_admin_reply_q(), mpi3mr_process_op_reply_q(), mpi3mr_check_op_admin_proc() and mpi3mr_soft_reset_handler() functions in drivers/scsi/mpi3mr/mpi3mr_fw.c. A local user can perform a denial of service (DoS) attack.

3) Out-of-bounds read (CVE-ID: CVE-2025-38415)

CWE-ID: CWE-125 - Out-of-bounds read

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 an out-of-bounds read error within the squashfs_fill_super() function in fs/squashfs/super.c. A local user can perform a denial of service (DoS) attack.

4) Out-of-bounds read (CVE-ID: CVE-2025-39760)

CWE-ID: CWE-125 - Out-of-bounds read

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 an out-of-bounds read error within the usb_parse_ss_endpoint_companion() function in drivers/usb/core/config.c. A local user can perform a denial of service (DoS) attack.

5) Improper locking (CVE-ID: CVE-2023-53192)

CWE-ID: CWE-667 - Improper Locking

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 locking within the include/net/vxlan.h. A local user can perform a denial of service (DoS) attack.

6) Input validation error (CVE-ID: CVE-2025-39933)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/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 recv_done() function in fs/smb/client/smbdirect.c. A local user can perform a denial of service (DoS) attack.

7) Use-after-free (CVE-ID: CVE-2025-40271)

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 pde_put(), remove_proc_entry() and remove_proc_subtree() functions in fs/proc/generic.c. A local user can escalate privileges on the system.

8) Use-after-free (CVE-ID: CVE-2023-53762)

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

9) Input validation error (CVE-ID: CVE-2025-40269)

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 snd_usb_endpoint_set_params() function in sound/usb/endpoint.c. A local user can perform a denial of service (DoS) attack.

10) Use-after-free (CVE-ID: CVE-2023-53821)

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 vti6_tnl_xmit() function in net/ipv6/ip6_vti.c. A local user can escalate privileges on the system.

11) Use-after-free (CVE-ID: CVE-2022-50673)

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 ext4_truncate() function in fs/ext4/inode.c. A local user can escalate privileges on the system.

12) Buffer overflow (CVE-ID: CVE-2025-68349)

CWE-ID: CWE-119 - Memory corruption

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 memory corruption within the pnfs_mark_layout_stateid_invalid() function in fs/nfs/pnfs.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://access.redhat.com/errata/RHSA-2026:3267