SB2026042085 - Red Hat Enterprise Linux 10 update for kernel
Published: April 20, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-23066)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the rxrpc_recvmsg() function in net/rxrpc/recvmsg.c. A local user can escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2026-23193)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the iscsit_dec_session_usage_count() function in drivers/target/iscsi/iscsi_target_util.c. A local user can escalate privileges on the system.
3) Use of uninitialized resource (CVE-ID: CVE-2026-23156)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to use of uninitialized resource within the efivar_entry_get() function in fs/efivarfs/vars.c. A local user can perform a denial of service (DoS) attack.
4) Use-after-free (CVE-ID: CVE-2026-23231)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nf_tables_addchain() function in net/netfilter/nf_tables_api.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.