SB2023092008 - Multiple vulnerabilities in Oracle VM Server for x86
Published: September 20, 2023 Updated: January 9, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 27 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2023-2162)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a use-after-free error within the scsi_sw_tcp_session_create() function in drivers/scsi/iscsi_tcp.c in SCSI sub-component in the Linux Kernel. A local user can trigger a use-after-free error and gain access to sensitive information.
2) Out-of-bounds read (CVE-ID: CVE-2023-34256)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition within crc16 in lib/crc16.c when called from fs/ext4/super.c. A local user can trigger an out-of-bounds read error and crash the kernel.
3) NULL pointer dereference (CVE-ID: CVE-2023-0458)
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 do_prlimit() function. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.
4) Incorrect calculation (CVE-ID: CVE-2023-3161)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect calculation in the Framebuffer Console (fbcon) in the Linux kernel. A local user can perform a denial of service (DoS) attack.
5) Deadlock (CVE-ID: CVE-2023-31084)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a deadlock in drivers/media/dvb-core/dvb_frontend.c when a task is in !TASK_RUNNING. A local user can trigger a deadlock and crash the kernel.
6) Improper locking (CVE-ID: CVE-2023-2269)
The vulnerability allows a local user to perform a denial of service attack (DoS).
The vulnerability exists due to double-locking error in table_clear in drivers/md/dm-ioctl.c. A local user can perform a denial of service (DoS) attack.
7) Use-after-free (CVE-ID: CVE-2022-41218)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the dvb_demux_open() and dvb_dmxdev_release() function in drivers/media/dvb-core/dmxdev.c in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
8) 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.
9) 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.
10) Resource management error (CVE-ID: CVE-2022-3169)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources in Linux kernel when handling a consecutive request of the NVME_IOCTL_RESET and the NVME_IOCTL_SUBSYS_RESET through the device file of the driver. A local user can force the a PCIe link to disconnect.
11) Use-after-free (CVE-ID: CVE-2023-35824)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the dm1105_remove() function in drivers/media/pci/dm1105/dm1105.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
12) Use-after-free (CVE-ID: CVE-2023-3141)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the r592_remove() function of drivers/memstick/host/r592.c in media access in the Linux kernel. A local user can trigger a use-after-free error and escalate privileges on the system.
13) Out-of-bounds read (CVE-ID: CVE-2023-1380)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the Broadcom Full MAC Wi-Fi driver (brcmfmac.ko). A local user can trigger an out-of-bounds read error and read contents of kernel memory on the system.
14) Use-after-free (CVE-ID: CVE-2023-3159)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the outbound_phy_packet_callback() function in driver/firewire in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
15) Untrusted search path (CVE-ID: CVE-2023-38408)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to usage of an insecure search path within the PKCS#11 feature in ssh-agent. A remote attacker can trick the victim into connecting to a malicious SSH server and execute arbitrary code on the system, if an agent is forwarded to an attacker-controlled system.
Note, this vulnerability exists due to incomplete fix for #VU2015 (CVE-2016-10009).
16) Use-after-free (CVE-ID: CVE-2023-1118)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Linux kernel integrated infrared receiver/transceiver driver "drivers/media/rc/ene_ir.c" when detaching rc device. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
17) Use-after-free (CVE-ID: CVE-2022-3424)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the gru_set_context_option(), gru_fault() and gru_handle_user_call_os() functions in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
18) 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.
19) Use-after-free (CVE-ID: CVE-2022-1679)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ath9k_htc_wait_for_target() function in the Linux kernel’s Atheros wireless adapter driver. A local user can execute arbitrary code with elevated privileges.
20) Use-after-free (CVE-ID: CVE-2023-1670)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Xircom 16-bit PCMCIA (PC-card) Ethernet driver. A local user can trigger a use-after-free error and execute arbitrary code on the system.
21) Out-of-bounds write (CVE-ID: CVE-2023-3090)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the ipvlan network driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
22) User enumeration via covert timing channel (CVE-ID: CVE-2016-6210)
The vulnerability allows a remote attacker to enumerate users on system.
The vulnerability exists in most systems where the Blowfish algorithm runs faster than SHA256/SHA512. A remote unauthenticated attacker can determine valid usernames by sending a specially crafted request with a large password (approximately 10,000 characters) to the target ssh daemon. On systems where a valid user's password has been hashed with SHA256/SHA512, the response time will be shorter for a non-existent username than for a valid username.
Successful exploitation of this vulnerability may result in disclosure or user logins.
23) NULL pointer dereference (CVE-ID: CVE-2023-3106)
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 netlink_dump() function when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set. A local user can pass specially crafted messages to the socket and perform a denial of service (DoS) attack.
24) Out-of-bounds write (CVE-ID: CVE-2022-1015)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the nft_validate_register_store and nft_validate_register_load in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem. A local user can escalate privileges on the system.
25) Use-after-free (CVE-ID: CVE-2023-3567)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vc_screen() function in vcs_read in drivers/tty/vt/vc_screen.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
26) Input validation error (CVE-ID: CVE-2023-22024)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the OS kernel. A local user can pass specially crafted input to the system and perform a denial of service (DoS) attack.
27) Input validation error (CVE-ID: CVE-2023-2248)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an unspecified vulnerability within the OS kernel. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.