SB2026021161 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: February 11, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2022-49503)
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 ath9k_rx_prepare() function in drivers/net/wireless/ath/ath9k/htc_drv_txrx.c. A local user can perform a denial of service (DoS) attack.
2) Improper locking (CVE-ID: CVE-2023-53192)
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.
3) Use-after-free (CVE-ID: CVE-2023-53673)
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_cs_disconnect() function in net/bluetooth/hci_event.c. A local user can escalate privileges on the system.
4) Memory leak (CVE-ID: CVE-2025-40251)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the devl_rate_nodes_destroy() function in net/devlink/rate.c. A local user can perform a denial of service (DoS) attack.
5) Use-after-free (CVE-ID: CVE-2023-53751)
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_chan_is_iface_active() and cifs_try_adding_channels() functions in fs/cifs/sess.c. A local user can escalate privileges on the system.
6) Out-of-bounds read (CVE-ID: CVE-2025-40304)
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 bit_putcs() function in drivers/video/fbdev/core/bitblit.c. A local user can perform a denial of service (DoS) attack.
7) Out-of-bounds read (CVE-ID: CVE-2025-40322)
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 bit_putcs_aligned() and bit_putcs_unaligned() functions in drivers/video/fbdev/core/bitblit.c. A local user can perform a denial of service (DoS) attack.
8) 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.
9) NULL pointer dereference (CVE-ID: CVE-2023-53833)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the intel_prepare_plane_fb() function in drivers/gpu/drm/i915/display/intel_atomic_plane.c. A local user can perform a denial of service (DoS) attack.
10) Out-of-bounds read (CVE-ID: CVE-2025-68301)
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 aq_ring_rx_clean() function in drivers/net/ethernet/aquantia/atlantic/aq_ring.c. A local user can perform a denial of service (DoS) attack.
11) Integer overflow (CVE-ID: CVE-2022-50865)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer overflow within the tcp_add_backlog() function in net/ipv4/tcp_ipv4.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.