SB2023050982 - Red Hat Enterprise Linux 9 update for kernel-rt
Published: May 9, 2023 Updated: June 7, 2024
Breakdown by Severity
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- Critical
Description
This security bulletin contains information about 39 secuirty vulnerabilities.
1) Exposure of Resource to Wrong Sphere (CVE-ID: CVE-2021-26341)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to some AMD CPUs may transiently execute beyond unconditional direct branches. A local user can gain unauthorized access to sensitive information on the system.
2) Out-of-bounds write (CVE-ID: CVE-2021-33655)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in FBIOPUT_VSCREENINFO IOCTL. A local user can trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.
3) Out-of-bounds read (CVE-ID: CVE-2022-1462)
The vulnerability allows a local user to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition within the the Linux kernel’s TeleTYpe subsystem caused by a race condition when using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory file. A local user can trigger an out-of-bounds read error and crash the system or read random kernel memory.
4) NULL pointer dereference (CVE-ID: CVE-2022-1789)
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference in kvm_mmu_invpcid_gva. A local attacker can trigger vulnerability to perform a denial of service (DoS) attack.
5) Use-after-free (CVE-ID: CVE-2022-1882)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Linux kernel’s pipes functionality in free_pipe_info() function in fs/pipe.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
6) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-20141)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper imposition of security restrictions in the Linux kernel's components. A local user can trigger the vulnerability to bypass security restrictions bypass and escalate privileges on the system.
7) Security features bypass (CVE-ID: CVE-2022-21505)
The vulnerability allows an attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect implementation of the IMA lockdown feature. If IMA appraisal is used with the "ima_appraise=log" boot param, lockdown can be defeated with kexec on any machine with Secure Boot. An attacker with physical access to device can bypass Secure Boot mechanism.
8) Improper Initialization (CVE-ID: CVE-2022-2196)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper initialization within nVMX in Linux kernel. A local user can perform speculative execution attacks and escalate privileges on the system.
9) Input validation error (CVE-ID: CVE-2022-2663)
The vulnerability allows a remote attacker to bypass firewall rules.
The vulnerability exists due to insufficient validation of user-supplied input in nf_conntrack_irc in Linux kernel. A remote attacker can send unencrypted IRC with nf_conntrack_irc configured and bypass configured firewall rules.
10) Double Free (CVE-ID: CVE-2022-28388)
The vulnerability allows a local user to execute arbitrary code with elevated privileges.
The vulnerability exists due to boundary error in the usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c. A local user can pass specially crafted data to the application, trigger double free error and execute arbitrary code with elevated privileges.
11) Race condition (CVE-ID: CVE-2022-3028)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple calls to xfrm_probe_algs occurred simultaneously. A local user can exploit the race and escalate privileges on the system.
12) Resource management error (CVE-ID: CVE-2022-33743)
The vulnerability allows a malicious network backend to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in eXpress Data Path support implementation in Xen, allowing Linux netfront to use freed SKBs. A malicious network backend can cause denial of service on the guest OS.
13) Out-of-bounds read (CVE-ID: CVE-2022-3435)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the fib_nh_match() function in net/ipv4/fib_semantics.c IPv4 handler. A remote attacker can send specially crafted data to the system, trigger an out-of-bounds read error and read contents of memory on the system.
14) Memory leak (CVE-ID: CVE-2022-3524)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak within the ipv6_renew_options() function when retrieving a new IPv6 address from a malicious DHCP server. A remote attacker can force the system to leak memory and perform denial of service attack.
15) Race condition (CVE-ID: CVE-2022-3566)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the tcp_getsockopt() and tcp_setsockopt() functions in net/ipv4/tcp.c, do_ipv6_setsockopt() function in net/ipv6/ipv6_sockglue.c, and tcp_v6_connect() function in net/ipv6/tcp_ipv6.c in Linux kernel. A local user can exploit the race and escalate privileges on the system.
16) Race condition (CVE-ID: CVE-2022-3567)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the inet6_stream_ops() and inet6_dgram_ops() functions. A local user can exploit the race and escalate privileges on the system.
17) Memory leak (CVE-ID: CVE-2022-3619)
The vulnerability allows an attacker to perform a DoS attack.
The vulnerability exists due memory leak within the l2cap_recv_acldata() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to device can force the system to leak memory and perform denial of service attack.
18) Race condition (CVE-ID: CVE-2022-3623)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the follow_page_pte() function in mm/gup.c. A local user can exploit the race and escalate privileges on the system.
19) Use-after-free (CVE-ID: CVE-2022-3625)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the devlink_param_set() and devlink_param_get() function in net/core/devlink.c in IPsec component of Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
20) Buffer overflow (CVE-ID: CVE-2022-3628)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the brcmf_fweh_event_worker() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c. A local user can use a specially crafted device to trigger memory corruption and escalate privileges on the system.
21) Use-after-free (CVE-ID: CVE-2022-3640)
The vulnerability allows an attacker to compromise the affected system.
The vulnerability exists due to a use-after-free error in the 2cap_conn_del() function in net/bluetooth/l2cap_core.c in Linux kernel. An attacker with physical proximity to device can trigger a use-after-free error and execute arbitrary code on the system.
22) Double Free (CVE-ID: CVE-2022-3707)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within the intel_gvt_dma_map_guest_page() function in Intel GVT-g graphics driver. A local user can trigger a double free error and crash the kernel.
23) Race condition (CVE-ID: CVE-2022-39188)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within include/asm-generic/tlb.h in the Linux kernel. A local user can exploit the race and escalate privileges on the system.
Note, this only occurs in situations with VM_PFNMAP VMAs.
24) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-39189)
The vulnerability allows a guest user to escalate privileges on the system.
The vulnerability exists due to incorrect handling of TLB flush operations in certain KVM_VCPU_PREEMPTED situations in the x86 KVM subsystem in the Linux kernel. An attacker with unprivileged access to the guest OS can escalate privileges on the guest.
25) NULL pointer dereference (CVE-ID: CVE-2022-4128)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the MPTCP protocol when traversing the subflow list at disconnect time. A local user can perform a denial of service (DoS) attack.
26) NULL pointer dereference (CVE-ID: CVE-2022-4129)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
27) Buffer overflow (CVE-ID: CVE-2022-41674)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing WLAN frames within the ieee80211_bss_info_update() function in net/mac80211/scan.c in Linux kernel. A remote attacker on the local network can send specially crafted WLAN frames to the affected system, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
28) Use-after-free (CVE-ID: CVE-2022-42703)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the mm/rmap.c in the Linux kernel, related to leaf anon_vma double reuse. A local user can trigger a use-after-free error and crash the kernel.
29) Use-after-free (CVE-ID: CVE-2022-42720)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the mac80211 stack in Linux kernel when parsing a multi-BSS element. A remote attacker on the local network can send specially crafted WLAN frames to the affected system, trigger a use-after-free error and execute arbitrary code.30) Buffer overflow (CVE-ID: CVE-2022-42721)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a list management error in the mac80211 stack in the Linux kernel when handling BSS. A remote attacker on the local network can send specially crafted WLAN frames to the system, trigger linked list corruption and execute arbitrary code.
31) NULL pointer dereference (CVE-ID: CVE-2022-42722)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the mac80211 stack in Linux kernel. A remote attacker on the local network can send specially crafted WLAN frames to the affected system and perform a denial of service (DoS) attack against the beacon protection of P2P devices.
32) Use-after-free (CVE-ID: CVE-2022-42896)
The vulnerability allows an attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the l2cap_connect() and l2cap_le_connect_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can trigger a use-after-free error and execute arbitrary code on the system.
33) Out-of-bounds write (CVE-ID: CVE-2022-43750)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
34) NULL pointer dereference (CVE-ID: CVE-2022-47929)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the traffic control subsystem in Linux kernel. A local user can pass pass a specially crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands and perform a denial of service (DoS) attack.
35) NULL pointer dereference (CVE-ID: CVE-2023-0394)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the rawv6_push_pending_frames() function in net/ipv6/raw.c. A local user can run a specially crafted program on the system and perform a denial of service (DoS) attack.
36) Use-after-free (CVE-ID: CVE-2023-0461)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Upper Level Protocol (ULP) subsystem in Linux kernel caused by improper handling of sockets entering the LISTEN state in certain protocols. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
37) Use-after-free (CVE-ID: CVE-2023-0590)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the qdisc_graft() function in net/sched/sch_api.c. A local user can trigger a use-after-free error and crash the kernel.
38) Use-after-free (CVE-ID: CVE-2023-1195)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the reconn_set_ipaddr_from_hostname() function in fs/cifs/connect.c in Linux kernel. A local user can perform a denial of service (DoS) attack.
39) NULL pointer dereference (CVE-ID: CVE-2023-1382)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in net/tipc/topsrv.c within the TIPC protocol implementation in the Linux kernel. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.