SB2023041127 - SUSE update for the Linux Kernel
Published: April 11, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 20 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2017-5753)
The vulnerability allows a local attacker to obtain potentially sensitive information.
The vulnerability exists in Intel CPU hardware due to improper implementation of the speculative execution of instructions. A local attacker can perform a bounds check bypass, execute arbitrary code, conduct a side-channel attack and read sensitive memory information.
2) Memory leak (CVE-ID: CVE-2021-3923)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due memory leak within RDMA over infiniband implementation in Linux kernel. A local user can force the application to leak memory by sensing commands to the /dev/infiniband/rdma_cm device node and gain access to sensitive information.
3) Double Free (CVE-ID: CVE-2022-4744)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the tun_free_netdev() function in the Linux kernel’s TUN/TAP device driver. A local user can trigger a double free error and execute arbitrary code with elevated privileges.
4) 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.
5) Type Confusion (CVE-ID: CVE-2023-1075)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error within the tls_is_tx_ready() function in the net/tls stack of the Linux Kernel. A local user can trigger a type confusion error and execute arbitrary code with elevated privileges.
6) Type Confusion (CVE-ID: CVE-2023-1076)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error during initialization of TUN/TAP sockets. A local user can trigger a type confusion error and execute arbitrary code with elevated privileges.
7) Out-of-bounds write (CVE-ID: CVE-2023-1078)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the rds_rm_zerocopy_callback() function in Linux kernel RDS (Reliable Datagram Sockets) protocol. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
8) NULL pointer dereference (CVE-ID: CVE-2023-1095)
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 nf_tables_updtable() function within the netfilter subsystem. A local user can perform a denial of service (DoS) attack.
9) Use-after-free (CVE-ID: CVE-2023-1281)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in Linux kernel traffic control index filter (tcindex) when the tcf_exts_exec() function is called with the destroyed tcf_ext. A local user attacker can trigger a use-after-free error and execute arbitrary code with elevated privileges.
10) 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.
11) Infinite loop (CVE-ID: CVE-2023-1390)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in tipc_link_xmit() within the Linux kernel TIPC kernel module when parsing UDp packets. A remote attacker can send two small UDP packets to a system with a UDP bearer and consume all available CPU resources.
12) Improper Initialization (CVE-ID: CVE-2023-1513)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper initialization when calling the KVM_GET_DEBUGREGS ioctl on 32-bit systems. A local user can run a specially crafted application to gain access to sensitive information.
13) Race condition (CVE-ID: CVE-2023-1582)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition within fs/proc/task_mmu.c. A local user can exploit the race and crash the kernel.
14) NULL pointer dereference (CVE-ID: CVE-2023-23004)
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 get_sg_table() function in drivers/gpu/drm/arm/malidp_planes.c. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.
15) Use-after-free (CVE-ID: CVE-2023-25012)
The vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the bigben_remove() function in drivers/hid/hid-bigbenff.c. An attacker with physical access to the system can attach a specially crafted USB device to the system and cause a denial of service condition.
16) NULL pointer dereference (CVE-ID: CVE-2023-28327)
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 unix_diag_get_exact() function in net/unix/diag.c. A local user can perform a denial of service (DoS) attack.
17) NULL pointer dereference (CVE-ID: CVE-2023-28328)
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 az6027 driver in drivers/media/usb/dev-usb/az6027.c in the Linux Kernel. A local user can pass specially crafted data to the application and perform a denial of service (DoS) attack.
18) Double Free (CVE-ID: CVE-2023-28464)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the hci_conn_cleanup() function in net/bluetooth/hci_conn.c in Linux kernel. A local user can trigger a double free error and execute arbitrary code with elevated privileges.
19) Race condition (CVE-ID: CVE-2023-28466)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition caused by a missing lock_sock call within the do_tls_getsockopt() function in net/tls/tls_main.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
20) Buffer overflow (CVE-ID: CVE-2023-28772)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the seq_buf_putmem_hex() function in lib/seq_buf.c. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.