SB2022061728 - SUSE update for the Linux Kernel
Published: June 17, 2022 Updated: March 30, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 30 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2017-13695)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists in the Linux kernel's ACPI subsystem where a function does not flush the operand cache and causes a kernel stack dump. A local user can pass a specially crafted ACPI table to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism.
2) Security restrictions bypass (CVE-ID: CVE-2018-7755)
The vulnerability allows a local unauthenticated attacker to bypass security restrictions on the target system.The weakness exists in the drivers/block/floppy.c source code in the fd_locked_ioctl function due to insufficient security restrictions. A local attacker can bypass security restrictions through the system floppy drive and obtain kernel code and data from the system.
3) Use-after-free (CVE-ID: CVE-2019-19377)
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.
4) Input validation error (CVE-ID: CVE-2019-20811)
The vulnerability allows a local authenticated user to manipulate data.
An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
5) Protection Mechanism Failure (CVE-ID: CVE-2020-26541)
The vulnerability allows a local user to escalate privileges on the system.
The Linux kernel through 5.8.13 does not properly enforce the Secure
Boot Forbidden Signature Database (aka dbx) protection mechanism. This
affects certs/blacklist.c and certs/system_keyring.c. A local user can escalate privileges on the system.
6) Use-after-free (CVE-ID: CVE-2021-20292)
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to a use-after-free error in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. A local user can escalate privileges and execute code in the context of the kernel.
7) Race condition (CVE-ID: CVE-2021-20321)
The vulnerability allows a local user to perform a denial of service (DoS) attacks.
The vulnerability exists due to a race condition when accessing file object in the Linux kernel OverlayFS subsystem. A local user can rename files in specific way with OverlayFS and perform a denial of service (DoS) attack.
8) Input validation error (CVE-ID: CVE-2021-33061)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient control flow management. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
9) NULL pointer dereference (CVE-ID: CVE-2021-38208)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the net/nfc/llcp_sock.c component. A remote attacker can make getsockname call and perform a denial of service (DoS) attack.
10) Out-of-bounds read (CVE-ID: CVE-2021-39711)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to Incorrect Size Value when processing files in bpf_prog_test_run_skb of test_run.c. A local user with System execution privileges can trigger out-of-bounds read error and read contents of memory on the system.
11) Improper Validation of Array Index (CVE-ID: CVE-2021-43389)
The vulnerability allows a local user to execute arbitrary code with elevated privileges.The vulnerability exists due to improper validation of array index in the ISDN CAPI implementation within detach_capi_ctr() function in drivers/isdn/capi/kcapi.c. A local user can send specially crafted data to the system and execute arbitrary code with elevated privileges.
12) Use-after-free (CVE-ID: CVE-2022-1011)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the write() function of FUSE filesystem. A local user can retireve (partial) /etc/shadow hashes and execute arbitrary code with elevated privileges.
13) Use-after-free (CVE-ID: CVE-2022-1184)
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to a use-after-free error in fs/ext4/namei.c:dx_insert_block() function in the Linux kernel’s filesystem sub-component.. A local user can trigger use-after-free and perform a denial of service attack.
14) Information disclosure (CVE-ID: CVE-2022-1353)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the pfkey_register function in net/key/af_key.c in the Linux kernel. A local user can gain unauthorized access to kernel memory, leading to a system crash or a leak of internal kernel information.
15) Use-after-free (CVE-ID: CVE-2022-1419)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in vgem_gem_dumb_create() function in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
16) NULL pointer dereference (CVE-ID: CVE-2022-1516)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference error in the Linux kernel’s X.25 set of standardized network protocols functionality. A local user can terminate session using a simulated Ethernet card and perform a denial of service (DoS) attack.
17) Use-after-free (CVE-ID: CVE-2022-1652)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to use-after-free error in the bad_flp_intr() function. A local user can execute a specially-crafted program to cause a denial of service condition on the system or escalate privileges on the system.
18) Race condition (CVE-ID: CVE-2022-1729)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within sys_perf_event_open() in Linux kernel. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
19) Use-after-free (CVE-ID: CVE-2022-1734)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to Marvell NFC device driver implementation in the Linux kernel did not properly perform memory cleanup operations in some situations. A local user can trigger use-after-free to escalate privileges on the system.
20) Use-after-free (CVE-ID: CVE-2022-1974)
The vulnerability allows a local privileged user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Linux kernel's NFC core functionality due to a race condition between kobject creation and delete. A local attacker with CAP_NET_ADMIN privilege can leak kernel information and escalate privileges on the system.
21) Uncaught Exception (CVE-ID: CVE-2022-1975)
The vulnerability allows a remote attacker on the local network to perform a denial of service (DoS) attack.
The vulnerability exists due to an uncaught exception error in the Linux kernel. A remote attacker on the local network can perform a denial of service (DoS) attack.
22) Information disclosure (CVE-ID: CVE-2022-21123)
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.
23) Information disclosure (CVE-ID: CVE-2022-21125)
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.
24) Incomplete cleanup (CVE-ID: CVE-2022-21127)
The vulnerability allows a local user to gain access to sensitive information on the system.
The vulnerability exists due to incomplete cleanup in specific special register read operations. A local user can enable information disclosure.
25) Information disclosure (CVE-ID: CVE-2022-21166)
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.
26) Input validation error (CVE-ID: CVE-2022-21180)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation in Memory Mapped I/O (MMIO) for some 14nm Client/Xeon E3 Intel® Processors. A local user can pass specially crafted input and perform a denial of service (DoS) attack in certain virtualized environments.
27) Improper access control (CVE-ID: CVE-2022-21499)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.
28) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-22942)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.
Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.
29) Memory leak (CVE-ID: CVE-2022-28748)
The vulnerability allows an attacker to gain access to sensitive information.
The vulnerability exists due memory leak when working with ax88179_178a devices. An attacker with physical access to the system can inject a malicious USB-drive and remotely obtain data from kernel memory.
30) Incorrect default permissions (CVE-ID: CVE-2022-30594)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to mishandling seccomp permissions. A local user can bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag and escalate privileges on the system.
Remediation
Install update from vendor's website.