SB2024100211 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: October 2, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Improper locking (CVE-ID: CVE-2024-27415)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the nf_conntrack_init_end() function in net/netfilter/nf_conntrack_core.c, within the nf_ct_bridge_pre() function in net/bridge/netfilter/nf_conntrack_bridge.c, within the IS_ENABLED() and br_nf_pre_routing() functions in net/bridge/br_netfilter_hooks.c. A local user can perform a denial of service (DoS) attack.
2) Use-after-free (CVE-ID: CVE-2024-36979)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the br_mst_vlan_set_state() and br_mst_set_state() functions in net/bridge/br_mst.c. A local user can escalate privileges on the system.
3) Input validation error (CVE-ID: CVE-2024-38558)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when parsing ICMPv6 packets within the parse_icmpv6() function in net/openvswitch/flow.c. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.
4) NULL pointer dereference (CVE-ID: CVE-2024-36270)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the nf_tproxy_laddr4() function in net/ipv4/netfilter/nf_tproxy_ipv4.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.