SB2022092046 - SUSE update for the Linux Kernel
Published: September 20, 2022 Updated: March 20, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 secuirty vulnerabilities.
1) Code injection (CVE-ID: CVE-2016-3695)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists within the einj_error_inject() function in drivers/acpi/apei/einj.c in the Linux kernel, which allows local users to simulate hardware errors. A local user can cause a denial of service by leveraging failure to disable APEI error injection through EINJ when securelevel is set.
2) Use-after-free (CVE-ID: CVE-2020-27784)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error when accessing a deallocated instance in printer_ioctl(). A local user can trigger a use-after-free error and crash the kernel.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-4155)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.
4) 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.
5) Out-of-bounds read (CVE-ID: CVE-2022-20368)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary condition within the packet_recvmsg() function in Linux kernel. A local user can trigger an out-of-bounds read error and potentially escalate privileges on the system.
6) Out-of-bounds write (CVE-ID: CVE-2022-20369)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the v4l2_m2m_querybuf() function in v4l2-mem2mem.c. A local user can trigger ab out-of-bounds write and execute arbitrary code with elevated privileges.
7) Double Free (CVE-ID: CVE-2022-2588)
The vulnerability allows a local user to escalate privileges on the system.
The
vulnerability exists due to a double free error within the network packet scheduler implementation
in the route4_change() function in Linux kernel when removing all references to a route filter
before freeing it. A local user can run a specially crafted program to
crash the kernel or execute arbitrary code.
8) Security restrictions bypass (CVE-ID: CVE-2022-26373)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in Intel CPU processors. A local user can bypass the expected architecture isolation between contexts and gain access to sensitive information on the system.
9) Input validation error (CVE-ID: CVE-2022-2663)
The vulnerability allows a remote attacker to bypass firewall rules.
The vulnerability exists due to insufficient validation of user-supplied input in nf_conntrack_irc in Linux kernel. A remote attacker can send unencrypted IRC with nf_conntrack_irc configured and bypass configured firewall rules.
10) Out-of-bounds read (CVE-ID: CVE-2022-2905)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the Linux kernel BPF subsystem. A local user can call the bpf_tail_call() function with a key larger than the max_entries of the map, trigger an out-of-bounds read and read parts of kernel memory.
11) Use-after-free (CVE-ID: CVE-2022-2977)
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 implementation of proxied virtualized TPM devices. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
12) Race condition (CVE-ID: CVE-2022-3028)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple calls to xfrm_probe_algs occurred simultaneously. A local user can exploit the race and escalate privileges on the system.
13) Resource management error (CVE-ID: CVE-2022-36879)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the xfrm_expand_policies() function in net/xfrm/xfrm_policy.c. A local user can cause the refcount to be dropped twice and perform a denial of service (DoS) attack.
14) Race condition (CVE-ID: CVE-2022-39188)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within include/asm-generic/tlb.h in the Linux kernel. A local user can exploit the race and escalate privileges on the system.
Note, this only occurs in situations with VM_PFNMAP VMAs.
15) Out-of-bounds read (CVE-ID: CVE-2022-39190)
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to an out-of-bounds read error within the net/netfilter/nf_tables_api.c in the Linux kernel. A local user can bind to an already bound chain and crash the kernel.
Remediation
Install update from vendor's website.