SB2026030331 - Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel-rt
Published: March 3, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2025-38415)
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.
2) Improper locking (CVE-ID: CVE-2025-38459)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the clip_mkip() function in net/atm/clip.c. A local user can perform a denial of service (DoS) attack.
3) Out-of-bounds read (CVE-ID: CVE-2025-39760)
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.
4) Buffer overflow (CVE-ID: CVE-2025-39817)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the efivarfs_d_compare() function in fs/efivarfs/super.c. A local user can perform a denial of service (DoS) attack.
5) Use-after-free (CVE-ID: CVE-2025-39993)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the display_open(), send_packet(), vfd_write(), lcd_write() and imon_disconnect() functions in drivers/media/rc/imon.c. A local user can escalate privileges on the system.
6) Use-after-free (CVE-ID: CVE-2025-40271)
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.
7) Use-after-free (CVE-ID: CVE-2022-50673)
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.
8) Buffer overflow (CVE-ID: CVE-2025-68349)
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.
9) Use-after-free (CVE-ID: CVE-2026-23074)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the teql_qdisc_init() function in net/sched/sch_teql.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.