SB2022041342 - Ubuntu update for linux-bluefield
Published: April 13, 2022 Updated: December 13, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2021-28711)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.
2) Resource exhaustion (CVE-ID: CVE-2021-28712)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.
3) Resource exhaustion (CVE-ID: CVE-2021-28713)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.
4) Improper Resource Shutdown or Release (CVE-ID: CVE-2021-28714)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. A remote user can use a UDP connection on a fast interface to trigger resource exhaustion and perform a denial of service (DoS) attack.
5) Improper Resource Shutdown or Release (CVE-ID: CVE-2021-28715)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. A remote user can use a UDP connection on a fast interface to trigger resource exhaustion and perform a denial of service (DoS) attack.
6) Information disclosure (CVE-ID: CVE-2021-4135)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to simulated networking device driver for the Linux kernel does not properly initialize memory in certain situations. A local user can gain unauthorized access to sensitive information (kernel memory).
7) Input validation error (CVE-ID: CVE-2021-43976)
The vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the mwifiex_usb_recv() function in drivers/net/wireless/marvell/mwifiex/usb.c in Linux kernel. An attacker with physical access to the system can insert a specially crafted USB device and perform a denial of service (DoS) attack.
8) Use-after-free (CVE-ID: CVE-2021-44733)
The vulnerability allows a local user to elevate privileges on the system.
The vulnerability exists due to a use-after-free error in the drivers/tee/tee_shm.c file within the TEE subsystem in the Linux kernel. A local user can trigger a race condition in tee_shm_get_from_id during an attempt to free a shared memory object and execute arbitrary code with elevated privileges.
9) Information disclosure (CVE-ID: CVE-2021-45095)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a refcount leak within the pep_sock_accept() function in net/phonet/pep.c in the Linux kernel. A local user can gain unauthorized access to sensitive information on the system.
10) Out-of-bounds read (CVE-ID: CVE-2021-45469)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to a boundary condition in the __f2fs_setxattr() function in fs/f2fs/xattr.c in the Linux kernel when an inode has an invalid last xattr entry. A local user can create a specially crafted f2fs image, trigger an out-of-bounds read error, and perform a denial of service attack or possibly execute arbitrary code.
11) Memory leak (CVE-ID: CVE-2021-45480)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the __rds_conn_create() function in net/rds/connection.c. A local user can perform a denial of service attack.
12) Stack-based buffer overflow (CVE-ID: CVE-2022-0435)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the Linux kernel networking module for the Transparent Inter-Process Communication (TIPC) protocol. A remote unauthenticated attacker can send specially crafted traffic to the system, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the TIPC bearer is set up.
13) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-0492)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a logic error within the cgroup_release_agent_write() function in kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.
14) Use-after-free (CVE-ID: CVE-2022-1055)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tc_new_tfilter in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.
15) Heap-based buffer overflow (CVE-ID: CVE-2022-27666)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c in Linux kernel. A local unprivileged user can pass specially crafted data to the system, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.