SB2025070734 - Red Hat Enterprise Linux 9 update for kernel
Published: July 7, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-21759)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mld_send_cr() and igmp6_send() functions in net/ipv6/mcast.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2025-21887)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ovl_link_up() function in fs/overlayfs/copy_up.c. A local user can escalate privileges on the system.
3) Use-after-free (CVE-ID: CVE-2025-22004)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the lec_send() function in net/atm/lec.c. A local user can escalate privileges on the system.
4) Out-of-bounds read (CVE-ID: CVE-2022-49846)
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 udf_find_entry() function in fs/udf/namei.c. A local user can perform a denial of service (DoS) attack.
5) Memory leak (CVE-ID: CVE-2025-37799)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the vmxnet3_process_xdp() function in drivers/net/vmxnet3/vmxnet3_xdp.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.