SB2023041467 - SUSE update for the Linux Kernel
Published: April 14, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 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) Use-after-free (CVE-ID: CVE-2021-4203)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in sock_getsockopt() function in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() function (and connect() function) in the Linux kernel. A local user can exploit the use-after-free error and crash the system or escalate privileges on the system.
4) Race condition (CVE-ID: CVE-2022-20567)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the pppol2tp_create() function in l2tp_ppp.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
5) 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.
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) 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.
8) 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.
9) 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.
10) 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.
11) Type Confusion (CVE-ID: CVE-2023-23454)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error within the cbq_classify() function in net/sched/sch_cbq.c in the Linux kernel. A local user can trigger a type confusion error and crash the kernel.
12) Type Confusion (CVE-ID: CVE-2023-23455)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error within the atm_tc_enqueue() function in net/sched/sch_atm.c in the Linux kernel. A local user can trigger a type confusion error and perform a denial of service (DoS) attack.
13) 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.
14) 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.
15) 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.